/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/divinefifo-bug_1w1r.line1086.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:24:24,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:24:24,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:24:24,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:24:24,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:24:24,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:24:24,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:24:24,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:24:24,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:24:24,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:24:24,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:24:24,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:24:24,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:24:24,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:24:24,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:24:24,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:24:24,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:24:24,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:24:24,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:24:24,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:24:24,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:24:24,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:24:24,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:24:24,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:24:24,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 14:24:24,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:24:24,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:24:24,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:24:24,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:24:24,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:24:24,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:24:24,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:24:24,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:24:24,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:24:24,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:24:24,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:24:24,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:24:24,447 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:24:24,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:24:24,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:24:24,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:24:24,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:24:24,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:24:24,450 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:24:24,451 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:24:24,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:24:24,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:24:24,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:24:24,716 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:24:24,717 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:24:24,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1086.bpl [2022-10-03 14:24:24,720 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1086.bpl' [2022-10-03 14:24:24,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:24:24,809 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:24:24,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:24:24,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:24:24,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:24:24,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:24,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:24:24,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:24:24,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:24:24,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:24:25,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/1) ... [2022-10-03 14:24:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:24:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:24:25,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 14:24:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 14:24:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 14:24:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 14:24:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:24:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:24:25,091 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:24:25,312 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:24:25,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:24:26,550 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:24:26,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:24:26,584 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 14:24:26,590 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:26 BoogieIcfgContainer [2022-10-03 14:24:26,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:24:26,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:24:26,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:24:26,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:24:26,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:24" (1/2) ... [2022-10-03 14:24:26,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fa4520 and model type divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:26, skipping insertion in model container [2022-10-03 14:24:26,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1086.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:26" (2/2) ... [2022-10-03 14:24:26,604 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1086.bpl [2022-10-03 14:24:26,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:24:26,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:24:26,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:24:26,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:24:26,806 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 14:24:26,864 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:24:26,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:24:26,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:24:26,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:24:26,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:24:26,896 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:24:26,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:24:26,910 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;@52e55776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:24:26,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:24:27,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:24:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:24:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -442373824, now seen corresponding path program 1 times [2022-10-03 14:24:27,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:24:27,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819382620] [2022-10-03 14:24:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:24:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:24:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:24:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:24:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:24:27,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819382620] [2022-10-03 14:24:27,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819382620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:24:27,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:24:27,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:24:27,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497478816] [2022-10-03 14:24:27,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:24:27,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:24:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:24:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:24:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:24:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:27,635 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:24:27,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 167.0) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:24:27,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:24:27,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:24:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:24:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -961630541, now seen corresponding path program 1 times [2022-10-03 14:24:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:24:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167745703] [2022-10-03 14:24:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:24:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:24:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:24:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:24:30,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:24:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167745703] [2022-10-03 14:24:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167745703] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:24:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:24:30,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-10-03 14:24:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074733829] [2022-10-03 14:24:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:24:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-03 14:24:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:24:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-03 14:24:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2375, Unknown=0, NotChecked=0, Total=2550 [2022-10-03 14:24:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:30,527 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:24:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 8.04) internal successors, (402), 51 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:24:30,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:30,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-03 14:24:42,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 14:24:42,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:24:42,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:24:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash -380687820, now seen corresponding path program 1 times [2022-10-03 14:24:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:24:42,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770506667] [2022-10-03 14:24:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:24:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:24:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:24:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10716 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:24:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:24:51,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770506667] [2022-10-03 14:24:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770506667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:24:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:24:51,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-10-03 14:24:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076086033] [2022-10-03 14:24:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:24:51,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-10-03 14:24:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:24:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-10-03 14:24:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=4882, Unknown=0, NotChecked=0, Total=5112 [2022-10-03 14:24:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:51,930 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:24:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 15.527777777777779) internal successors, (1118), 72 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:24:51,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:51,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 64 states. [2022-10-03 14:24:51,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-03 14:25:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-10-03 14:25:17,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 14:25:17,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:25:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:25:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1056871571, now seen corresponding path program 1 times [2022-10-03 14:25:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:25:17,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662007327] [2022-10-03 14:25:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:25:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:25:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:25:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 27470 backedges. 7930 proven. 12736 refuted. 0 times theorem prover too weak. 6804 trivial. 0 not checked. [2022-10-03 14:25:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:25:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662007327] [2022-10-03 14:25:30,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662007327] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:25:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964316922] [2022-10-03 14:25:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:25:30,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:25:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:25:30,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:25:30,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 14:25:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:25:32,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 12962 conjuncts, 87 conjunts are in the unsatisfiable core [2022-10-03 14:25:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:25:56,333 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 [2022-10-03 14:25:56,341 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 [2022-10-03 14:25:58,093 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 23 treesize of output 15 [2022-10-03 14:25:58,096 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 26 treesize of output 14 [2022-10-03 14:25:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27470 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 26018 trivial. 0 not checked. [2022-10-03 14:25:58,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:25:59,014 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:25:59,014 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 32 treesize of output 36 [2022-10-03 14:26:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 27470 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 27313 trivial. 0 not checked. [2022-10-03 14:26:00,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964316922] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-03 14:26:00,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-03 14:26:00,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [63, 27] total 103 [2022-10-03 14:26:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677282259] [2022-10-03 14:26:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:26:00,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-03 14:26:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:26:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-03 14:26:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=10197, Unknown=0, NotChecked=0, Total=10506 [2022-10-03 14:26:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:26:00,302 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:26:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 64.3529411764706) internal successors, (1094), 18 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:26:00,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:26:00,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 65 states. [2022-10-03 14:26:00,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 104 states. [2022-10-03 14:26:00,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:26:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:26:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-03 14:26:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-10-03 14:26:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-03 14:26:24,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-03 14:26:24,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-03 14:26:24,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:26:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:26:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1941923467, now seen corresponding path program 1 times [2022-10-03 14:26:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:26:24,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650345772] [2022-10-03 14:26:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:26:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:26:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat