/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_ok_longest.line351.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 00:57:50,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 00:57:50,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 00:57:50,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-04 00:57:50,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-04 00:57:50,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-04 00:57:50,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-04 00:57:50,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-04 00:57:50,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-04 00:57:50,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-04 00:57:50,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-04 00:57:50,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-04 00:57:50,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-04 00:57:50,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-04 00:57:50,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-04 00:57:50,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-04 00:57:50,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-04 00:57:50,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-04 00:57:50,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-04 00:57:50,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-04 00:57:50,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-04 00:57:50,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-04 00:57:50,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-04 00:57:50,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-04 00:57:50,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-04 00:57:50,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-04 00:57:50,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-04 00:57:50,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-04 00:57:50,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-04 00:57:50,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-04 00:57:50,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-04 00:57:50,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-04 00:57:50,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-04 00:57:50,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-04 00:57:50,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-04 00:57:50,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-04 00:57:50,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-04 00:57:50,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-04 00:57:50,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 00:57:50,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 00:57:50,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 00:57:50,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 00:57:50,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 00:57:50,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 00:57:50,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 00:57:50,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 00:57:50,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 00:57:50,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 00:57:50,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 00:57:50,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 00:57:50,729 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 00:57:50,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 00:57:50,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 00:57:50,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 00:57:50,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 00:57:50,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 00:57:50,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 00:57:50,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 00:57:50,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 00:57:50,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:57:50,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 00:57:50,732 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 00:57:50,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 00:57:50,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 00:57:50,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 00:57:50,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 00:57:50,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 00:57:50,941 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 00:57:50,942 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 00:57:50,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_ok_longest.line351.bpl [2022-10-04 00:57:50,943 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/queue_ok_longest.line351.bpl' [2022-10-04 00:57:50,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 00:57:50,991 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 00:57:50,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 00:57:50,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 00:57:50,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 00:57:51,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 00:57:51,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 00:57:51,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 00:57:51,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 00:57:51,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/1) ... [2022-10-04 00:57:51,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 00:57:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:51,152 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 00:57:51,185 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 00:57:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-10-04 00:57:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-10-04 00:57:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-10-04 00:57:51,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-10-04 00:57:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 00:57:51,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 00:57:51,202 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 00:57:51,297 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 00:57:51,298 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 00:57:51,757 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 00:57:51,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 00:57:51,769 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-04 00:57:51,776 INFO L202 PluginConnector]: Adding new model queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:57:51 BoogieIcfgContainer [2022-10-04 00:57:51,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 00:57:51,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 00:57:51,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 00:57:51,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 00:57:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:50" (1/2) ... [2022-10-04 00:57:51,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b14cf74 and model type queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:57:51, skipping insertion in model container [2022-10-04 00:57:51,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue_ok_longest.line351.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:57:51" (2/2) ... [2022-10-04 00:57:51,787 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.line351.bpl [2022-10-04 00:57:51,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 00:57:51,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 00:57:51,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 00:57:51,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 00:57:51,908 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-04 00:57:51,950 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:57:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:57:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:51,957 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 00:57:51,958 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 00:57:51,997 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:57:52,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:57:52,011 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;@420e1a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:57:52,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:57:52,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:57:52,392 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:57:52,394 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-10-04 00:57:52,401 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:57:52,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:57:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:52,412 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 00:57:52,413 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 00:57:52,420 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:57:52,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 00:57:52,422 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;@420e1a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:57:52,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:57:52,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 00:57:52,440 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:57:52,443 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-04 00:57:52,453 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:57:52,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:57:52,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:52,494 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 00:57:52,500 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 00:57:52,503 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:57:52,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:57:52,504 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;@420e1a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:57:52,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:57:52,504 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-04 00:57:52,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 00:57:52,504 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-04 00:57:52,505 INFO L307 ceAbstractionStarter]: Result for error location t1Err0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-10-04 00:57:52,508 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 00:57:52,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 00:57:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:52,522 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 00:57:52,524 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 00:57:52,526 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 00:57:52,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Err0ASSERT_VIOLATIONASSERT ======== [2022-10-04 00:57:52,527 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;@420e1a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 00:57:52,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 00:57:53,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:57:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:57:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash -954586634, now seen corresponding path program 1 times [2022-10-04 00:57:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:57:53,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334025955] [2022-10-04 00:57:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:57:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:57:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:57:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2022-10-04 00:57:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:57:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334025955] [2022-10-04 00:57:54,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334025955] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:57:54,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:57:54,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 00:57:54,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847209628] [2022-10-04 00:57:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:57:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 00:57:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:57:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 00:57:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 00:57:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:54,117 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:57:54,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 196.0) internal successors, (392), 2 states have internal predecessors, (392), 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 00:57:54,118 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 00:57:54,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:57:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:57:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -554807040, now seen corresponding path program 1 times [2022-10-04 00:57:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:57:54,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004755981] [2022-10-04 00:57:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:57:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:57:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:57:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-10-04 00:57:55,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:57:55,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004755981] [2022-10-04 00:57:55,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004755981] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:57:55,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 00:57:55,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-04 00:57:55,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989755543] [2022-10-04 00:57:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:57:55,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-04 00:57:55,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:57:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-04 00:57:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-04 00:57:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:55,443 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:57:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.33333333333333) internal successors, (470), 6 states have internal predecessors, (470), 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 00:57:55,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:55,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:57:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:57:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 00:57:55,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:57:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:57:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -648174904, now seen corresponding path program 1 times [2022-10-04 00:57:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:57:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435216701] [2022-10-04 00:57:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:57:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:57:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:57:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-10-04 00:57:55,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:57:55,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435216701] [2022-10-04 00:57:55,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435216701] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 00:57:55,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321946211] [2022-10-04 00:57:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:57:55,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:57:55,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:57:55,867 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 00:57:55,882 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 00:57:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:57:56,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 61 conjunts are in the unsatisfiable core [2022-10-04 00:57:56,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 00:57:56,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-04 00:57:57,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-04 00:57:57,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-10-04 00:57:57,303 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-04 00:57:57,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-10-04 00:57:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-04 00:57:57,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-04 00:57:57,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-04 00:57:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 270 proven. 55 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-04 00:57:57,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 00:58:29,886 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork1_write~int_#ptr#1.base| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (not (= (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1) 800)) (< (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|)))) is different from false [2022-10-04 00:58:29,979 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| Int)) (or (forall ((v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (< (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|) (not (= 800 (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1)))))) (not (<= |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| |c_~#stored_elements~0.base|)))) is different from false [2022-10-04 00:58:30,000 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| Int) (v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (not (= 800 (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1))) (not (<= |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| |c_~#stored_elements~0.base|)) (< (+ |c_~#queue~0.offset| (* 4 (select .cse0 .cse1))) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|)))) is different from false [2022-10-04 00:58:30,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-04 00:58:30,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2022-10-04 00:58:30,063 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-04 00:58:30,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 78 [2022-10-04 00:58:30,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2022-10-04 00:58:30,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-10-04 00:58:30,133 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-04 00:58:30,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 54 [2022-10-04 00:58:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 270 proven. 55 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-04 00:58:30,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321946211] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 00:58:30,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 00:58:30,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 23] total 51 [2022-10-04 00:58:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255177435] [2022-10-04 00:58:30,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 00:58:30,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-04 00:58:30,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:58:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-04 00:58:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2022, Unknown=82, NotChecked=282, Total=2550 [2022-10-04 00:58:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:30,647 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:58:30,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 19.568627450980394) internal successors, (998), 51 states have internal predecessors, (998), 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 00:58:30,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:30,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:30,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:31,339 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_~#queue~0.offset| 3204))) (and (= |c_t1Thread1of1ForFork1_write~int_#ptr#1.base| |c_~#queue~0.base|) (= |c_~#queue~0.offset| |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (= (select |c_#valid| |c_t1Thread1of1ForFork1_read~int_#ptr#1.base|) 1) (= |c_~#queue~0.base| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (<= 7 |c_~#queue~0.base|) (= |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| |c_~#queue~0.offset|) (= |c_~#queue~0.base| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base|) (= |c_t1Thread1of1ForFork1_write~int_#value#1| 1) (= (select |c_#valid| |c_~#queue~0.base|) 1) (= (select |c_#valid| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base|) 1) (= .cse0 |c_t1Thread1of1ForFork1_write~int_#ptr#1.offset|) (= (select (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) 1) (= (select (select |c_#memory_int| |c_~#queue~0.base|) .cse0) 1) (= (select |c_#valid| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) 1) (= |c_~#queue~0.base| |c_ULTIMATE.start_init_~q#1.base|) (= |c_~#queue~0.base| |c_ULTIMATE.start_init_#in~q#1.base|) (forall ((|v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| Int) (v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse1 (select (store |c_#memory_int| |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| v_ArrVal_219) |c_~#queue~0.base|)) (.cse2 (+ |c_~#queue~0.offset| 3204))) (or (not (= 800 (select (store .cse1 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse2))) (not (<= |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| |c_~#stored_elements~0.base|)) (< (+ |c_~#queue~0.offset| (* 4 (select .cse1 .cse2))) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|)))) (<= |c_~#stored_elements~0.base| 6) (<= 7 |c_t1Thread1of1ForFork1_enqueue_~q#1.base|))) is different from false [2022-10-04 00:58:31,342 WARN L833 $PredicateComparison]: unable to prove that (and (<= 7 |c_~#queue~0.base|) (= (select |c_#valid| |c_~#queue~0.base|) 1) (= (select (select |c_#memory_int| |c_~#queue~0.base|) (+ |c_~#queue~0.offset| 3204)) 1) (forall ((|v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| Int) (v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (not (= 800 (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1))) (not (<= |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| |c_~#stored_elements~0.base|)) (< (+ |c_~#queue~0.offset| (* 4 (select .cse0 .cse1))) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|)))) (<= |c_~#stored_elements~0.base| 6)) is different from false [2022-10-04 00:58:31,345 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |c_~#queue~0.base|) (+ |c_~#queue~0.offset| 3204)) 1) (<= 7 |c_~#queue~0.base|) (= (select |c_#valid| |c_~#queue~0.base|) 1) (forall ((|v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| Int)) (or (forall ((v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (< (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|) (not (= 800 (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1)))))) (not (<= |v_t1Thread1of1ForFork1_write~int_#ptr#1.base_53| |c_~#stored_elements~0.base|)))) (<= |c_~#stored_elements~0.base| 6)) is different from false [2022-10-04 00:58:31,775 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |c_~#queue~0.base|) (+ |c_~#queue~0.offset| 3204)) 1) (<= 7 |c_~#queue~0.base|) (<= |c_t1Thread1of1ForFork1_write~int_#ptr#1.base| 6) (= (select |c_#valid| |c_~#queue~0.base|) 1) (forall ((v_ArrVal_222 Int) (v_ArrVal_219 (Array Int Int)) (|v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| Int)) (let ((.cse0 (select (store |c_t1Thread1of1ForFork1_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork1_write~int_#ptr#1.base| v_ArrVal_219) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (not (= (select (store .cse0 |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42| v_ArrVal_222) .cse1) 800)) (< (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) |v_t1Thread1of1ForFork1_write~int_#ptr#1.offset_42|))))) is different from false [2022-10-04 00:58:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:58:39,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-04 00:58:39,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:39,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:58:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:58:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -609338775, now seen corresponding path program 1 times [2022-10-04 00:58:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:58:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823831339] [2022-10-04 00:58:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:39,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:58:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-10-04 00:58:40,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:58:40,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823831339] [2022-10-04 00:58:40,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823831339] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 00:58:40,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518390261] [2022-10-04 00:58:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:40,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:40,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:58:40,283 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 00:58:40,284 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 00:58:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:40,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-04 00:58:40,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 00:58:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-10-04 00:58:40,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-04 00:58:40,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518390261] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:58:40,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-04 00:58:40,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-10-04 00:58:40,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653124724] [2022-10-04 00:58:40,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:58:40,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-04 00:58:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:58:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-04 00:58:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-04 00:58:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:40,560 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:58:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 00:58:40,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:40,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:40,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:58:40,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:58:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:58:42,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-04 00:58:42,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:42,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:58:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:58:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1810036213, now seen corresponding path program 1 times [2022-10-04 00:58:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:58:42,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361410473] [2022-10-04 00:58:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:58:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-10-04 00:58:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:58:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361410473] [2022-10-04 00:58:42,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361410473] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 00:58:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194621474] [2022-10-04 00:58:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:58:42,902 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 00:58:42,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-04 00:58:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:43,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 114 conjunts are in the unsatisfiable core [2022-10-04 00:58:43,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 00:58:45,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-04 00:58:45,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-04 00:58:45,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-10-04 00:58:45,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-04 00:58:45,827 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-04 00:58:45,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-10-04 00:58:46,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-04 00:58:46,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-04 00:58:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-04 00:58:46,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-04 00:58:46,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194621474] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 00:58:46,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-04 00:58:46,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [9] total 29 [2022-10-04 00:58:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676019236] [2022-10-04 00:58:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 00:58:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-04 00:58:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:58:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-04 00:58:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-10-04 00:58:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:46,342 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:58:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 29.952380952380953) internal successors, (629), 21 states have internal predecessors, (629), 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 00:58:46,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:46,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:46,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:58:46,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:58:46,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:58:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:58:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:58:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:58:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-04 00:58:52,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-04 00:58:52,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:52,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-04 00:58:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 00:58:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1531490291, now seen corresponding path program 1 times [2022-10-04 00:58:52,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 00:58:52,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690186246] [2022-10-04 00:58:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 00:58:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-04 00:58:52,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 00:58:52,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690186246] [2022-10-04 00:58:52,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690186246] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 00:58:52,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686264493] [2022-10-04 00:58:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 00:58:52,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 00:58:52,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 00:58:52,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-04 00:58:52,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-04 00:58:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 00:58:52,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 102 conjunts are in the unsatisfiable core [2022-10-04 00:58:52,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 00:58:53,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-04 00:58:53,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-04 00:58:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-04 00:58:53,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-04 00:58:53,614 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-04 00:58:53,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-10-04 00:58:53,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-04 00:58:53,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-04 00:58:54,038 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-04 00:58:54,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-10-04 00:58:54,139 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-04 00:58:54,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-10-04 00:58:54,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-04 00:58:54,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-04 00:58:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 00:58:54,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 00:58:56,259 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-04 00:58:56,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2022-10-04 00:59:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 00:59:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686264493] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 00:59:06,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 00:59:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 21] total 53 [2022-10-04 00:59:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901531325] [2022-10-04 00:59:06,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 00:59:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-04 00:59:06,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 00:59:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-04 00:59:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2531, Unknown=28, NotChecked=0, Total=2862 [2022-10-04 00:59:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:59:06,390 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 00:59:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 15.433962264150944) internal successors, (818), 54 states have internal predecessors, (818), 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 00:59:06,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 00:59:06,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-10-04 00:59:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2022-10-04 00:59:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-10-04 00:59:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-04 00:59:06,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.