/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.line1768.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-29 22:08:15,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 22:08:15,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 22:08:15,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 22:08:15,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 22:08:15,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 22:08:15,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 22:08:15,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 22:08:15,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 22:08:15,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 22:08:15,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 22:08:15,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 22:08:15,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 22:08:15,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 22:08:15,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 22:08:15,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 22:08:15,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 22:08:15,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 22:08:15,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 22:08:15,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 22:08:15,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 22:08:15,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 22:08:15,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 22:08:15,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 22:08:15,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 22:08:15,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 22:08:15,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 22:08:15,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 22:08:15,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-29 22:08:15,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 22:08:15,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 22:08:15,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 22:08:15,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 22:08:15,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-29 22:08:15,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-29 22:08:15,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 22:08:15,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 22:08:15,557 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 22:08:15,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 22:08:15,558 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 22:08:15,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 22:08:15,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 22:08:15,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 22:08:15,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 22:08:15,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-29 22:08:15,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 22:08:15,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 22:08:15,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-29 22:08:15,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-29 22:08:15,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:08:15,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 22:08:15,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-29 22:08:15,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-29 22:08:15,562 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-29 22:08:15,562 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-29 22:08:15,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-29 22:08:15,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 22:08:15,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 22:08:15,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 22:08:15,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 22:08:15,810 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 22:08:15,811 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 22:08:15,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1768.bpl [2022-09-29 22:08:15,812 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1768.bpl' [2022-09-29 22:08:15,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 22:08:15,902 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-29 22:08:15,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 22:08:15,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 22:08:15,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 22:08:15,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:15,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:15,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:15,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:15,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:16,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:16,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:16,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 22:08:16,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 22:08:16,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 22:08:16,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 22:08:16,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/1) ... [2022-09-29 22:08:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:08:16,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:08:16,064 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) [2022-09-29 22:08:16,067 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 [2022-09-29 22:08:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-09-29 22:08:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-09-29 22:08:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 22:08:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 22:08:16,096 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 22:08:16,244 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 22:08:16,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 22:08:17,340 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 22:08:17,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 22:08:17,365 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-29 22:08:17,369 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:08:17 BoogieIcfgContainer [2022-09-29 22:08:17,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 22:08:17,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-29 22:08:17,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-29 22:08:17,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-29 22:08:17,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:08:15" (1/2) ... [2022-09-29 22:08:17,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177d35ed and model type divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:08:17, skipping insertion in model container [2022-09-29 22:08:17,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1768.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:08:17" (2/2) ... [2022-09-29 22:08:17,379 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1768.bpl [2022-09-29 22:08:17,387 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-29 22:08:17,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-29 22:08:17,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-29 22:08:17,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-29 22:08:17,576 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-29 22:08:17,655 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-29 22:08:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-29 22:08:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:08:17,658 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) [2022-09-29 22:08:17,660 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 [2022-09-29 22:08:17,687 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-29 22:08:17,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-29 22:08:17,701 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;@11b11a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-29 22:08:17,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-29 22:08:17,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:08:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:08:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 83538552, now seen corresponding path program 1 times [2022-09-29 22:08:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:08:17,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940041394] [2022-09-29 22:08:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:08:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:08:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:08:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:08:18,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:08:18,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940041394] [2022-09-29 22:08:18,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940041394] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:08:18,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:08:18,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-29 22:08:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969169189] [2022-09-29 22:08:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:08:18,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-29 22:08:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:08:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-29 22:08:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-29 22:08:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:18,489 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:08:18,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 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) [2022-09-29 22:08:18,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:18,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-29 22:08:18,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:08:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:08:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash 360935808, now seen corresponding path program 1 times [2022-09-29 22:08:18,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:08:18,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335717914] [2022-09-29 22:08:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:08:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:08:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:08:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:08:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:08:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335717914] [2022-09-29 22:08:18,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335717914] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:08:18,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:08:18,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-29 22:08:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900257281] [2022-09-29 22:08:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:08:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-29 22:08:18,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:08:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-29 22:08:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-29 22:08:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:18,916 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:08:18,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2022-09-29 22:08:18,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:18,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:08:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-29 22:08:20,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:08:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:08:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -855783432, now seen corresponding path program 1 times [2022-09-29 22:08:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:08:20,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407122965] [2022-09-29 22:08:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:08:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:08:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:08:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:08:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:08:24,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407122965] [2022-09-29 22:08:24,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407122965] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:08:24,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184484394] [2022-09-29 22:08:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:08:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:08:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:08:24,379 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) [2022-09-29 22:08:24,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-29 22:08:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:08:26,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 8685 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-29 22:08:26,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:08:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:08:29,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 22:08:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:08:33,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184484394] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 22:08:33,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 22:08:33,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-29 22:08:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791211513] [2022-09-29 22:08:33,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 22:08:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-29 22:08:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:08:33,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-29 22:08:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-29 22:08:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:33,088 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:08:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 361.7142857142857) internal successors, (2532), 7 states have internal predecessors, (2532), 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) [2022-09-29 22:08:33,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:33,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:08:33,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:08:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:08:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:08:36,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-29 22:08:36,607 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,SelfDestructingSolverStorable2 [2022-09-29 22:08:36,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:08:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:08:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1591576196, now seen corresponding path program 2 times [2022-09-29 22:08:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:08:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560116228] [2022-09-29 22:08:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:08:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:08:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:09:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 274 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-09-29 22:09:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:09:09,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560116228] [2022-09-29 22:09:09,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560116228] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:09:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784952435] [2022-09-29 22:09:09,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-29 22:09:09,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:09:09,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:09:09,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-29 22:09:09,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-29 22:09:12,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-29 22:09:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 22:09:12,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-29 22:09:12,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:09:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 129305 trivial. 0 not checked. [2022-09-29 22:09:26,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-29 22:09:26,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784952435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:09:26,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-29 22:09:26,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-09-29 22:09:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927988946] [2022-09-29 22:09:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:09:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-29 22:09:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:09:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-29 22:09:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-09-29 22:09:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:26,071 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:09:26,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 137.5) internal successors, (1100), 9 states have internal predecessors, (1100), 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) [2022-09-29 22:09:26,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:26,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:09:26,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:09:26,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.