/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/floating_read-15.line329.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 04:42:45,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 04:42:45,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 04:42:45,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-30 04:42:45,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-30 04:42:45,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-30 04:42:45,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-30 04:42:45,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-30 04:42:45,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-30 04:42:45,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-30 04:42:45,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-30 04:42:45,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-30 04:42:45,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-30 04:42:45,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-30 04:42:45,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-30 04:42:45,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-30 04:42:45,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-30 04:42:45,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-30 04:42:45,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-30 04:42:45,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-30 04:42:45,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-30 04:42:45,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-30 04:42:45,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-30 04:42:45,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-30 04:42:45,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-30 04:42:45,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-30 04:42:45,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-30 04:42:45,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-30 04:42:45,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 04:42:45,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 04:42:45,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 04:42:45,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 04:42:45,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 04:42:45,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 04:42:45,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 04:42:45,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 04:42:45,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 04:42:45,745 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 04:42:45,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 04:42:45,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 04:42:45,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 04:42:45,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 04:42:45,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 04:42:45,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 04:42:45,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 04:42:45,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 04:42:45,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 04:42:45,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 04:42:45,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 04:42:45,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 04:42:45,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 04:42:45,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 04:42:45,976 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 04:42:45,977 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 04:42:45,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/floating_read-15.line329.bpl [2022-09-30 04:42:45,978 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/floating_read-15.line329.bpl' [2022-09-30 04:42:46,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 04:42:46,020 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 04:42:46,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 04:42:46,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 04:42:46,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 04:42:46,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 04:42:46,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 04:42:46,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 04:42:46,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 04:42:46,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/1) ... [2022-09-30 04:42:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 04:42:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:46,118 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) [2022-09-30 04:42:46,137 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 [2022-09-30 04:42:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-09-30 04:42:46,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-09-30 04:42:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 04:42:46,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 04:42:46,151 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 04:42:46,246 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 04:42:46,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 04:42:46,456 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 04:42:46,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 04:42:46,464 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-30 04:42:46,465 INFO L202 PluginConnector]: Adding new model floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 04:42:46 BoogieIcfgContainer [2022-09-30 04:42:46,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 04:42:46,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 04:42:46,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 04:42:46,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 04:42:46,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 04:42:46" (1/2) ... [2022-09-30 04:42:46,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71edc87b and model type floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 04:42:46, skipping insertion in model container [2022-09-30 04:42:46,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "floating_read-15.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 04:42:46" (2/2) ... [2022-09-30 04:42:46,476 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-15.line329.bpl [2022-09-30 04:42:46,482 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 04:42:46,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 04:42:46,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 04:42:46,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 04:42:46,525 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-30 04:42:46,555 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:46,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:46,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:46,557 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) [2022-09-30 04:42:46,558 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 [2022-09-30 04:42:46,580 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:46,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:42:46,591 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:46,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:46,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:46,641 INFO L85 PathProgramCache]: Analyzing trace with hash -666157295, now seen corresponding path program 1 times [2022-09-30 04:42:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:46,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649377725] [2022-09-30 04:42:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:47,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649377725] [2022-09-30 04:42:47,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649377725] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:42:47,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:42:47,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:42:47,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887771340] [2022-09-30 04:42:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:42:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:42:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:42:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:42:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:47,033 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:47,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:42:47,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:47,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 04:42:47,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -608324826, now seen corresponding path program 1 times [2022-09-30 04:42:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595917757] [2022-09-30 04:42:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:47,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:47,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:47,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595917757] [2022-09-30 04:42:47,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595917757] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:47,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418688799] [2022-09-30 04:42:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:47,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:47,364 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) [2022-09-30 04:42:47,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-30 04:42:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:47,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:42:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:47,486 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 [2022-09-30 04:42:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:47,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:47,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418688799] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:47,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:47,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:42:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720156705] [2022-09-30 04:42:47,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:42:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:42:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:42:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:47,960 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:47,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:42:47,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:47,960 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 04:42:48,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 04:42:48,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-30 04:42:48,392 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,SelfDestructingSolverStorable1 [2022-09-30 04:42:48,395 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-30 04:42:48,396 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-09-30 04:42:48,400 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:48,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:48,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:48,401 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) [2022-09-30 04:42:48,403 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 [2022-09-30 04:42:48,405 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:48,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 04:42:48,406 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:48,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:48,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 04:42:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1493415617, now seen corresponding path program 1 times [2022-09-30 04:42:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:48,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928203169] [2022-09-30 04:42:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:48,473 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 04:42:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:48,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 04:42:48,514 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 04:42:48,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 04:42:48,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-30 04:42:48,515 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 04:42:48,515 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-09-30 04:42:48,515 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 04:42:48,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-30 04:42:48,524 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-30 04:42:48,526 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:48,572 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) [2022-09-30 04:42:48,573 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 [2022-09-30 04:42:48,576 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:48,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:42:48,577 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:48,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:48,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2095271663, now seen corresponding path program 1 times [2022-09-30 04:42:48,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:48,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906782561] [2022-09-30 04:42:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:48,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906782561] [2022-09-30 04:42:48,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906782561] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:42:48,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:42:48,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:42:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860593118] [2022-09-30 04:42:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:42:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:42:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:42:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:42:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:48,667 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:42:48,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-30 04:42:48,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:48,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2069081775, now seen corresponding path program 1 times [2022-09-30 04:42:48,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:48,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56327154] [2022-09-30 04:42:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56327154] [2022-09-30 04:42:48,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56327154] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15675412] [2022-09-30 04:42:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:48,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:48,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:48,905 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) [2022-09-30 04:42:48,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-30 04:42:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:48,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:42:48,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:48,998 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 [2022-09-30 04:42:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:49,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15675412] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:49,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:49,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:42:49,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242367549] [2022-09-30 04:42:49,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:42:49,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:42:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:42:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:49,321 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:42:49,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:49,321 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 04:42:49,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 04:42:49,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-30 04:42:49,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:49,968 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-30 04:42:49,968 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-09-30 04:42:49,971 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:49,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:49,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:49,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:42:49,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-09-30 04:42:49,979 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:49,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 04:42:49,980 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:49,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:50,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 04:42:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 677160048, now seen corresponding path program 1 times [2022-09-30 04:42:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954044392] [2022-09-30 04:42:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:50,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 04:42:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:50,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 04:42:50,076 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 04:42:50,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 04:42:50,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-30 04:42:50,076 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 04:42:50,077 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-09-30 04:42:50,077 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 04:42:50,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-30 04:42:50,085 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-30 04:42:50,087 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:50,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:50,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:50,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:42:50,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-09-30 04:42:50,127 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:50,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:42:50,128 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:50,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:50,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1229990097, now seen corresponding path program 1 times [2022-09-30 04:42:50,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:50,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886578122] [2022-09-30 04:42:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:50,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886578122] [2022-09-30 04:42:50,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886578122] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:42:50,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:42:50,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:42:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562480426] [2022-09-30 04:42:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:42:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:42:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:42:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:42:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:50,246 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:50,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:42:50,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:50,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-30 04:42:50,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash -880034792, now seen corresponding path program 1 times [2022-09-30 04:42:50,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:50,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681052799] [2022-09-30 04:42:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:50,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681052799] [2022-09-30 04:42:50,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681052799] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224881343] [2022-09-30 04:42:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:50,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:50,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:50,544 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) [2022-09-30 04:42:50,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-30 04:42:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:50,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:42:50,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:50,639 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 [2022-09-30 04:42:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:50,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:50,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224881343] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:50,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:42:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836954119] [2022-09-30 04:42:50,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:42:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:42:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:42:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:50,935 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:50,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:42:50,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:50,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:42:51,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-30 04:42:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-09-30 04:42:51,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 974273705, now seen corresponding path program 1 times [2022-09-30 04:42:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:51,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880840734] [2022-09-30 04:42:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:51,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880840734] [2022-09-30 04:42:51,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880840734] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945258023] [2022-09-30 04:42:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:51,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:42:51,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-30 04:42:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:51,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 04:42:51,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:51,839 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 [2022-09-30 04:42:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:52,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:52,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945258023] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:52,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:52,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-09-30 04:42:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787510308] [2022-09-30 04:42:52,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-30 04:42:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-30 04:42:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-09-30 04:42:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:52,469 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:52,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 7.645161290322581) internal successors, (237), 32 states have internal predecessors, (237), 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) [2022-09-30 04:42:52,469 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:52,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:42:52,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:42:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-30 04:42:53,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 04:42:53,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-30 04:42:53,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:53,938 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 04:42:53,939 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-09-30 04:42:53,941 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:53,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:53,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:53,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:42:53,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2022-09-30 04:42:53,960 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:53,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 04:42:53,961 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:53,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:53,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 04:42:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -221143052, now seen corresponding path program 1 times [2022-09-30 04:42:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206523718] [2022-09-30 04:42:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:54,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:54,013 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 04:42:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:42:54,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 04:42:54,033 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 04:42:54,033 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 04:42:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-30 04:42:54,033 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 04:42:54,034 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-09-30 04:42:54,034 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 04:42:54,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-30 04:42:54,042 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-30 04:42:54,044 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:42:54,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:42:54,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:54,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:42:54,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2022-09-30 04:42:54,108 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:42:54,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:42:54,109 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:42:54,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:42:54,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -556402863, now seen corresponding path program 1 times [2022-09-30 04:42:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:54,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052375514] [2022-09-30 04:42:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:54,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:54,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052375514] [2022-09-30 04:42:54,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052375514] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:42:54,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:42:54,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:42:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259203187] [2022-09-30 04:42:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:42:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:42:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:42:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:42:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:54,196 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:42:54,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:54,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-30 04:42:54,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1168087071, now seen corresponding path program 1 times [2022-09-30 04:42:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264000034] [2022-09-30 04:42:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:54,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264000034] [2022-09-30 04:42:54,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264000034] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:54,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461601642] [2022-09-30 04:42:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:54,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:54,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:54,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:42:54,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-30 04:42:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:54,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:42:54,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:54,495 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 [2022-09-30 04:42:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:54,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:54,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461601642] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:54,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:54,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:42:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845521836] [2022-09-30 04:42:54,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:42:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:42:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:42:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:54,772 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:54,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:42:54,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:54,772 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:42:55,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-30 04:42:55,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-30 04:42:55,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:42:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:42:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1922166204, now seen corresponding path program 1 times [2022-09-30 04:42:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:42:55,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929376632] [2022-09-30 04:42:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:55,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:42:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:55,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:42:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929376632] [2022-09-30 04:42:55,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929376632] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:42:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061587205] [2022-09-30 04:42:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:42:55,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:42:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:42:55,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:42:55,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-30 04:42:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:42:55,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 04:42:55,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:42:55,681 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 [2022-09-30 04:42:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:55,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:42:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:42:56,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061587205] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:42:56,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:42:56,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-09-30 04:42:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600562388] [2022-09-30 04:42:56,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:42:56,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-30 04:42:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:42:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-30 04:42:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-09-30 04:42:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:42:56,281 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:42:56,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 7.645161290322581) internal successors, (237), 32 states have internal predecessors, (237), 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) [2022-09-30 04:42:56,281 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:42:56,281 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:42:56,281 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:43:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:43:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-30 04:43:06,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 04:43:06,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-30 04:43:06,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-30 04:43:06,324 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 04:43:06,324 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-09-30 04:43:06,326 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:43:06,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:43:06,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:43:06,334 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:43:06,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2022-09-30 04:43:06,338 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:43:06,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 04:43:06,339 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:43:06,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:43:06,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 04:43:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:43:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2050842965, now seen corresponding path program 1 times [2022-09-30 04:43:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:43:06,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349313773] [2022-09-30 04:43:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:43:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:43:06,445 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 04:43:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:43:06,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 04:43:06,497 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 04:43:06,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 04:43:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-30 04:43:06,498 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 04:43:06,498 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-09-30 04:43:06,498 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 04:43:06,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-30 04:43:06,509 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-09-30 04:43:06,510 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:43:06,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:43:06,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:43:06,512 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:43:06,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2022-09-30 04:43:06,520 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:43:06,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:43:06,521 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:43:06,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:43:06,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:43:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:43:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -373951471, now seen corresponding path program 1 times [2022-09-30 04:43:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:43:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616174652] [2022-09-30 04:43:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:43:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:43:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:43:06,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616174652] [2022-09-30 04:43:06,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616174652] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:43:06,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:43:06,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:43:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120102381] [2022-09-30 04:43:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:43:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:43:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:43:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:43:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:43:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:06,583 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:43:06,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:43:06,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:43:06,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-30 04:43:06,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:43:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:43:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -791385142, now seen corresponding path program 1 times [2022-09-30 04:43:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:43:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726342169] [2022-09-30 04:43:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:43:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:43:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:06,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:43:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726342169] [2022-09-30 04:43:06,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726342169] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:43:06,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329544873] [2022-09-30 04:43:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:06,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:43:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:43:06,750 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:43:06,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-30 04:43:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:43:06,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:43:06,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:43:06,839 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 [2022-09-30 04:43:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:06,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:43:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:07,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329544873] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:43:07,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:43:07,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:43:07,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481127919] [2022-09-30 04:43:07,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:43:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:43:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:43:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:43:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:43:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:07,115 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:43:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:43:07,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:43:07,115 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:43:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:43:07,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-30 04:43:07,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-30 04:43:07,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:43:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:43:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1716950081, now seen corresponding path program 1 times [2022-09-30 04:43:07,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:43:07,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966725277] [2022-09-30 04:43:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:07,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:43:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:43:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:07,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:43:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966725277] [2022-09-30 04:43:07,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966725277] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:43:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182685369] [2022-09-30 04:43:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:43:07,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:43:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:43:07,834 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:43:07,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-30 04:43:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:43:07,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 04:43:07,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:43:07,990 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 [2022-09-30 04:43:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:08,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:43:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:43:08,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182685369] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:43:08,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:43:08,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-09-30 04:43:08,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115569478] [2022-09-30 04:43:08,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:43:08,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-30 04:43:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:43:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-30 04:43:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-09-30 04:43:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:43:08,620 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:43:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 7.645161290322581) internal successors, (237), 32 states have internal predecessors, (237), 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) [2022-09-30 04:43:08,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:43:08,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:43:08,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:45:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:45:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-30 04:45:19,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 04:45:19,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-09-30 04:45:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-30 04:45:19,560 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 04:45:19,561 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-09-30 04:45:19,565 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:45:19,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:45:19,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:45:19,566 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:45:19,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2022-09-30 04:45:19,575 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:45:19,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 04:45:19,575 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:45:19,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:45:19,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 04:45:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:45:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash 15350773, now seen corresponding path program 1 times [2022-09-30 04:45:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:45:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905220318] [2022-09-30 04:45:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:45:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:45:19,704 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 04:45:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 04:45:19,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 04:45:19,768 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 04:45:19,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 04:45:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-30 04:45:19,769 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 04:45:19,769 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-09-30 04:45:19,769 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 04:45:19,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-09-30 04:45:19,800 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-09-30 04:45:19,802 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 04:45:19,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 04:45:19,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:45:19,816 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 04:45:19,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2022-09-30 04:45:19,867 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 04:45:19,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 04:45:19,868 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;@7e94255b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 04:45:19,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 04:45:19,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:45:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:45:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1777344273, now seen corresponding path program 1 times [2022-09-30 04:45:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:45:19,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137439984] [2022-09-30 04:45:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:45:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:45:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:45:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137439984] [2022-09-30 04:45:19,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137439984] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 04:45:19,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 04:45:19,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-30 04:45:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067469017] [2022-09-30 04:45:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 04:45:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-30 04:45:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:45:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-30 04:45:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-30 04:45:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:19,977 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:45:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-09-30 04:45:19,977 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:45:20,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-30 04:45:20,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:45:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:45:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 250070995, now seen corresponding path program 1 times [2022-09-30 04:45:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:45:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171095360] [2022-09-30 04:45:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:45:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:45:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:45:20,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171095360] [2022-09-30 04:45:20,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171095360] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:45:20,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703002971] [2022-09-30 04:45:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:20,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:45:20,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:45:20,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:45:20,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-30 04:45:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:45:20,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-30 04:45:20,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:45:20,347 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 [2022-09-30 04:45:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:20,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:45:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:20,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703002971] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:45:20,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:45:20,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-30 04:45:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025411992] [2022-09-30 04:45:20,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:45:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-30 04:45:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:45:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-30 04:45:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-09-30 04:45:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:20,781 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:45:20,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 20 states have internal predecessors, (129), 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) [2022-09-30 04:45:20,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:45:20,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:45:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:45:21,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-30 04:45:22,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:45:22,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 04:45:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 04:45:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1589922074, now seen corresponding path program 1 times [2022-09-30 04:45:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 04:45:22,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787063059] [2022-09-30 04:45:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 04:45:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:45:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:22,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 04:45:22,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787063059] [2022-09-30 04:45:22,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787063059] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 04:45:22,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408389773] [2022-09-30 04:45:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 04:45:22,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 04:45:22,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 04:45:22,351 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 04:45:22,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-30 04:45:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 04:45:22,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 04:45:22,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 04:45:22,528 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 [2022-09-30 04:45:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:22,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 04:45:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 04:45:23,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408389773] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 04:45:23,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 04:45:23,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-09-30 04:45:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438014208] [2022-09-30 04:45:23,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 04:45:23,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-30 04:45:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 04:45:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-30 04:45:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-09-30 04:45:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 04:45:23,268 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 04:45:23,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 7.645161290322581) internal successors, (237), 32 states have internal predecessors, (237), 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) [2022-09-30 04:45:23,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-09-30 04:45:23,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-09-30 04:45:23,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.