/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-25.line329.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 21:36:45,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 21:36:45,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 21:36:45,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 21:36:45,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 21:36:45,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 21:36:45,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 21:36:45,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 21:36:45,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 21:36:45,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 21:36:45,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 21:36:45,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 21:36:45,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 21:36:45,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 21:36:45,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 21:36:45,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 21:36:45,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 21:36:45,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 21:36:45,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 21:36:45,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 21:36:45,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 21:36:45,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 21:36:45,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 21:36:45,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 21:36:45,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 21:36:45,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 21:36:45,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 21:36:45,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 21:36:45,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 21:36:45,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 21:36:45,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 21:36:45,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 21:36:45,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 21:36:45,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 21:36:45,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 21:36:45,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 21:36:45,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 21:36:45,329 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 21:36:45,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 21:36:45,329 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 21:36:45,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 21:36:45,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 21:36:45,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 21:36:45,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 21:36:45,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 21:36:45,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 21:36:45,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 21:36:45,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 21:36:45,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 21:36:45,332 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 21:36:45,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 21:36:45,333 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 21:36:45,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 21:36:45,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 21:36:45,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 21:36:45,559 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 21:36:45,560 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 21:36:45,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/floating_read-25.line329.bpl [2022-10-03 21:36:45,561 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/floating_read-25.line329.bpl' [2022-10-03 21:36:45,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 21:36:45,601 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 21:36:45,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 21:36:45,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 21:36:45,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 21:36:45,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 21:36:45,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 21:36:45,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 21:36:45,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 21:36:45,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/1) ... [2022-10-03 21:36:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 21:36:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:45,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 21:36:45,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 21:36:45,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-10-03 21:36:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-10-03 21:36:45,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 21:36:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 21:36:45,690 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 21:36:45,874 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 21:36:45,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 21:36:46,056 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 21:36:46,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 21:36:46,065 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-03 21:36:46,066 INFO L202 PluginConnector]: Adding new model floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:36:46 BoogieIcfgContainer [2022-10-03 21:36:46,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 21:36:46,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 21:36:46,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 21:36:46,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 21:36:46,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:36:45" (1/2) ... [2022-10-03 21:36:46,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b0644f and model type floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:36:46, skipping insertion in model container [2022-10-03 21:36:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "floating_read-25.line329.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:36:46" (2/2) ... [2022-10-03 21:36:46,095 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-25.line329.bpl [2022-10-03 21:36:46,104 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 21:36:46,110 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 21:36:46,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 21:36:46,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 21:36:46,181 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 21:36:46,274 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:46,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:46,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:46,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 21:36:46,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 21:36:46,324 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:46,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:36:46,342 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:46,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:46,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -666157295, now seen corresponding path program 1 times [2022-10-03 21:36:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805129530] [2022-10-03 21:36:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:46,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805129530] [2022-10-03 21:36:46,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805129530] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:36:46,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:36:46,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:36:46,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701173263] [2022-10-03 21:36:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:36:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:36:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:36:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:36:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:46,843 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:46,844 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) [2022-10-03 21:36:46,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:47,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 21:36:47,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash -608324826, now seen corresponding path program 1 times [2022-10-03 21:36:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:47,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643018231] [2022-10-03 21:36:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:47,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643018231] [2022-10-03 21:36:47,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643018231] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716281029] [2022-10-03 21:36:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:47,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:47,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 21:36:47,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 21:36:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:36:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:47,495 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 [2022-10-03 21:36:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:47,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:48,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716281029] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:48,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:48,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:36:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387780615] [2022-10-03 21:36:48,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:36:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:36:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:36:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:48,039 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:48,039 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) [2022-10-03 21:36:48,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:48,039 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-03 21:36:48,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 21:36:48,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-03 21:36:48,454 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 [2022-10-03 21:36:48,458 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-03 21:36:48,460 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-10-03 21:36:48,463 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:48,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:48,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 21:36:48,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-10-03 21:36:48,468 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:48,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 21:36:48,469 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:48,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:48,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-03 21:36:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1493415617, now seen corresponding path program 1 times [2022-10-03 21:36:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:48,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640136292] [2022-10-03 21:36:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:48,524 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-03 21:36:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:48,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-03 21:36:48,551 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-03 21:36:48,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 21:36:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 21:36:48,552 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-03 21:36:48,552 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-10-03 21:36:48,552 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-03 21:36:48,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-03 21:36:48,562 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-03 21:36:48,565 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:48,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:48,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:48,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 21:36:48,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-03 21:36:48,604 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:48,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:36:48,605 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:48,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:48,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2095271663, now seen corresponding path program 1 times [2022-10-03 21:36:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572777697] [2022-10-03 21:36:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:48,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:48,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572777697] [2022-10-03 21:36:48,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572777697] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:36:48,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:36:48,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:36:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692791070] [2022-10-03 21:36:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:36:48,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:36:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:36:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:36:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:48,776 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:48,776 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) [2022-10-03 21:36:48,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:48,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-03 21:36:48,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2069081775, now seen corresponding path program 1 times [2022-10-03 21:36:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:48,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569145223] [2022-10-03 21:36:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:49,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569145223] [2022-10-03 21:36:49,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569145223] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199225970] [2022-10-03 21:36:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:49,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:49,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:49,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 21:36:49,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-03 21:36:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:49,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:36:49,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:49,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:36:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:49,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:49,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199225970] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:49,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:49,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:36:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943891479] [2022-10-03 21:36:49,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:36:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:36:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:36:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:49,424 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:49,425 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) [2022-10-03 21:36:49,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:49,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-03 21:36:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 21:36:49,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-03 21:36:50,093 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 [2022-10-03 21:36:50,094 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-03 21:36:50,094 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-10-03 21:36:50,096 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:50,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:50,097 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) [2022-10-03 21:36:50,099 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 [2022-10-03 21:36:50,113 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:50,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 21:36:50,114 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:50,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:50,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-03 21:36:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash 677160048, now seen corresponding path program 1 times [2022-10-03 21:36:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408697785] [2022-10-03 21:36:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:50,162 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-03 21:36:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:50,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-03 21:36:50,206 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-03 21:36:50,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 21:36:50,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-03 21:36:50,207 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-03 21:36:50,207 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-10-03 21:36:50,207 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-03 21:36:50,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-03 21:36:50,217 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-03 21:36:50,219 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:50,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:50,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:50,233 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) [2022-10-03 21:36:50,247 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 [2022-10-03 21:36:50,250 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:50,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:36:50,250 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:50,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:50,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1229990097, now seen corresponding path program 1 times [2022-10-03 21:36:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:50,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184835905] [2022-10-03 21:36:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184835905] [2022-10-03 21:36:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184835905] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:36:50,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:36:50,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:36:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961022459] [2022-10-03 21:36:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:36:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:36:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:36:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:36:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:50,366 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:50,366 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) [2022-10-03 21:36:50,366 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-03 21:36:50,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash -880034792, now seen corresponding path program 1 times [2022-10-03 21:36:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919186359] [2022-10-03 21:36:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:50,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:50,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919186359] [2022-10-03 21:36:50,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919186359] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:50,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237100041] [2022-10-03 21:36:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:50,646 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 21:36:50,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-03 21:36:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:50,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:36:50,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:50,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:36:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:50,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:51,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237100041] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:51,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:51,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:36:51,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636080730] [2022-10-03 21:36:51,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:51,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:36:51,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:36:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:36:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:51,036 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:51,036 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) [2022-10-03 21:36:51,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:51,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:36:51,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-03 21:36:51,595 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 [2022-10-03 21:36:51,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 974273705, now seen corresponding path program 1 times [2022-10-03 21:36:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:51,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857085288] [2022-10-03 21:36:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857085288] [2022-10-03 21:36:51,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857085288] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864699786] [2022-10-03 21:36:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:51,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:51,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:51,820 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) [2022-10-03 21:36:51,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-03 21:36:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:51,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-03 21:36:51,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:51,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:36:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:52,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:52,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864699786] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:52,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:52,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-10-03 21:36:52,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111088075] [2022-10-03 21:36:52,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:52,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-03 21:36:52,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-03 21:36:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-10-03 21:36:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:52,656 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:52,656 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) [2022-10-03 21:36:52,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:52,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:36:52,656 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:36:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-03 21:36:53,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 21:36:53,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-03 21:36:54,091 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 [2022-10-03 21:36:54,092 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-03 21:36:54,093 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-10-03 21:36:54,095 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:54,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:54,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:54,107 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) [2022-10-03 21:36:54,109 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 [2022-10-03 21:36:54,111 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:54,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 21:36:54,112 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:54,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:54,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-03 21:36:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash -221143052, now seen corresponding path program 1 times [2022-10-03 21:36:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039702408] [2022-10-03 21:36:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:54,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-03 21:36:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:36:54,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-03 21:36:54,246 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-03 21:36:54,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 21:36:54,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-03 21:36:54,247 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-03 21:36:54,249 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-10-03 21:36:54,249 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-03 21:36:54,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-03 21:36:54,262 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-03 21:36:54,263 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:36:54,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:36:54,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:54,273 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) [2022-10-03 21:36:54,274 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 [2022-10-03 21:36:54,277 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:36:54,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:36:54,277 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:36:54,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:36:54,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:54,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -556402863, now seen corresponding path program 1 times [2022-10-03 21:36:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:54,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313036085] [2022-10-03 21:36:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:54,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313036085] [2022-10-03 21:36:54,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313036085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:36:54,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:36:54,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:36:54,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415956326] [2022-10-03 21:36:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:36:54,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:36:54,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:36:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:36:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:54,353 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:54,354 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) [2022-10-03 21:36:54,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-03 21:36:54,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1168087071, now seen corresponding path program 1 times [2022-10-03 21:36:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:54,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378738745] [2022-10-03 21:36:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:54,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:54,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:54,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378738745] [2022-10-03 21:36:54,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378738745] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:54,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019410664] [2022-10-03 21:36:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:54,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:54,639 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) [2022-10-03 21:36:54,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-03 21:36:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:54,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:36:54,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:54,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:36:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:54,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:55,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019410664] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:55,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:55,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:36:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113103830] [2022-10-03 21:36:55,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:55,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:36:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:36:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:36:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:55,152 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:55,153 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) [2022-10-03 21:36:55,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:55,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:36:55,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-03 21:36:55,698 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 [2022-10-03 21:36:55,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:36:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:36:55,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1922166204, now seen corresponding path program 1 times [2022-10-03 21:36:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:36:55,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558147017] [2022-10-03 21:36:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:36:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:36:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558147017] [2022-10-03 21:36:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558147017] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:36:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372660132] [2022-10-03 21:36:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:36:55,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:36:55,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:36:55,859 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) [2022-10-03 21:36:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-03 21:36:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:36:55,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-03 21:36:55,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:36:55,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:36:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:56,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:36:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:36:56,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372660132] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:36:56,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:36:56,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-10-03 21:36:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446336909] [2022-10-03 21:36:56,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:36:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-03 21:36:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:36:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-03 21:36:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-10-03 21:36:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:36:56,508 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:36:56,508 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) [2022-10-03 21:36:56,508 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:36:56,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:36:56,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:37:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:37:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 21:37:06,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 21:37:06,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-03 21:37:06,304 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 [2022-10-03 21:37:06,307 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-03 21:37:06,308 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-10-03 21:37:06,316 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:37:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:37:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:37:06,317 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) [2022-10-03 21:37:06,318 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 [2022-10-03 21:37:06,321 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:37:06,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 21:37:06,322 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:37:06,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:37:06,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-03 21:37:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:37:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2050842965, now seen corresponding path program 1 times [2022-10-03 21:37:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:37:06,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426425339] [2022-10-03 21:37:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:37:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:37:06,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-03 21:37:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:37:06,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-03 21:37:06,468 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-03 21:37:06,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 21:37:06,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-03 21:37:06,469 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-03 21:37:06,469 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-10-03 21:37:06,469 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-03 21:37:06,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-03 21:37:06,488 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-10-03 21:37:06,491 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:37:06,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:37:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:37:06,519 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) [2022-10-03 21:37:06,521 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 [2022-10-03 21:37:06,522 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:37:06,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:37:06,523 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:37:06,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:37:06,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:37:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:37:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash -373951471, now seen corresponding path program 1 times [2022-10-03 21:37:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:37:06,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408787793] [2022-10-03 21:37:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:37:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:37:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:37:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408787793] [2022-10-03 21:37:06,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408787793] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:37:06,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:37:06,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:37:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271765499] [2022-10-03 21:37:06,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:37:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:37:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:37:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:37:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:37:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:06,599 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:37:06,599 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) [2022-10-03 21:37:06,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:37:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-03 21:37:06,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:37:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:37:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash -791385142, now seen corresponding path program 1 times [2022-10-03 21:37:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:37:06,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385702405] [2022-10-03 21:37:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:37:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:37:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:06,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:37:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385702405] [2022-10-03 21:37:06,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385702405] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:37:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386237442] [2022-10-03 21:37:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:06,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:37:06,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:37:06,937 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) [2022-10-03 21:37:06,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-03 21:37:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:37:07,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:37:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:37:07,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:37:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:07,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:37:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:07,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386237442] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:37:07,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:37:07,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:37:07,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266536345] [2022-10-03 21:37:07,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:37:07,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:37:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:37:07,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:37:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:37:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:07,335 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:37:07,335 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) [2022-10-03 21:37:07,335 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:37:07,335 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:37:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:37:07,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-03 21:37:07,862 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 [2022-10-03 21:37:07,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:37:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:37:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1716950081, now seen corresponding path program 1 times [2022-10-03 21:37:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:37:07,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791119498] [2022-10-03 21:37:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:37:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:37:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:37:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791119498] [2022-10-03 21:37:08,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791119498] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:37:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988600129] [2022-10-03 21:37:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:37:08,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:37:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:37:08,013 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) [2022-10-03 21:37:08,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-03 21:37:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:37:08,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-03 21:37:08,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:37:08,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:37:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:08,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:37:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:37:08,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988600129] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:37:08,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:37:08,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-10-03 21:37:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948209733] [2022-10-03 21:37:08,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:37:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-03 21:37:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:37:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-03 21:37:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-10-03 21:37:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:37:08,758 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:37:08,758 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) [2022-10-03 21:37:08,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:37:08,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:37:08,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:39:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:39:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-03 21:39:21,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 21:39:21,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-03 21:39:21,915 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 [2022-10-03 21:39:21,916 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-03 21:39:21,916 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/2) [2022-10-03 21:39:21,918 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:39:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:39:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:39:21,936 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) [2022-10-03 21:39:21,943 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 [2022-10-03 21:39:21,945 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:39:21,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 21:39:21,946 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:39:21,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:39:22,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-03 21:39:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:39:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash 15350773, now seen corresponding path program 1 times [2022-10-03 21:39:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:39:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389599569] [2022-10-03 21:39:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:39:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:39:22,060 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-03 21:39:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-03 21:39:22,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-03 21:39:22,109 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-03 21:39:22,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 21:39:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-03 21:39:22,109 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-03 21:39:22,110 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2022-10-03 21:39:22,110 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-03 21:39:22,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-10-03 21:39:22,133 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-10-03 21:39:22,134 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 21:39:22,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 21:39:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:39:22,163 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) [2022-10-03 21:39:22,188 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 [2022-10-03 21:39:22,190 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 21:39:22,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 21:39:22,191 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;@4d7a4952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 21:39:22,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 21:39:22,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:39:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:39:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1777344273, now seen corresponding path program 1 times [2022-10-03 21:39:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:39:22,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606663144] [2022-10-03 21:39:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:39:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:39:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:22,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:39:22,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606663144] [2022-10-03 21:39:22,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606663144] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 21:39:22,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 21:39:22,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 21:39:22,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347524755] [2022-10-03 21:39:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 21:39:22,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 21:39:22,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:39:22,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 21:39:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-03 21:39:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:22,259 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:39:22,259 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) [2022-10-03 21:39:22,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:39:22,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-03 21:39:22,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:39:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:39:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 250070995, now seen corresponding path program 1 times [2022-10-03 21:39:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:39:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885300150] [2022-10-03 21:39:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:39:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:39:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:22,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:39:22,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885300150] [2022-10-03 21:39:22,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885300150] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:39:22,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314708436] [2022-10-03 21:39:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:22,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:39:22,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:39:22,494 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) [2022-10-03 21:39:22,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-03 21:39:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:39:22,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 21:39:22,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:39:22,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:39:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:22,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:39:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:22,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314708436] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:39:22,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:39:22,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-10-03 21:39:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474317056] [2022-10-03 21:39:22,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:39:22,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-03 21:39:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:39:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-03 21:39:22,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-10-03 21:39:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:22,966 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:39:22,967 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) [2022-10-03 21:39:22,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:39:22,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:39:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:39:23,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-03 21:39:23,528 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 [2022-10-03 21:39:23,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 21:39:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 21:39:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1589922074, now seen corresponding path program 1 times [2022-10-03 21:39:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 21:39:23,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208862616] [2022-10-03 21:39:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 21:39:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:39:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:23,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 21:39:23,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208862616] [2022-10-03 21:39:23,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208862616] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 21:39:23,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182166354] [2022-10-03 21:39:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 21:39:23,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 21:39:23,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 21:39:23,763 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) [2022-10-03 21:39:23,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-03 21:39:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 21:39:23,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-03 21:39:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 21:39:23,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 21:39:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:24,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 21:39:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 21:39:25,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182166354] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 21:39:25,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 21:39:25,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-10-03 21:39:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903837444] [2022-10-03 21:39:25,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 21:39:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-03 21:39:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 21:39:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-03 21:39:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-10-03 21:39:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 21:39:25,230 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 21:39:25,230 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) [2022-10-03 21:39:25,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 21:39:25,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-10-03 21:39:25,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.