/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1767.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:58:37,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:58:37,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:58:37,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:58:37,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:58:37,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:58:37,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:58:37,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:58:37,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:58:37,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:58:37,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:58:37,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:58:37,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:58:37,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:58:37,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:58:37,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:58:37,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:58:37,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:58:37,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:58:37,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:58:37,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:58:37,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:58:37,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:58:37,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:58:37,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-03 14:58:37,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-03 14:58:37,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-03 14:58:37,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-03 14:58:37,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-03 14:58:37,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-03 14:58:37,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-03 14:58:37,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-03 14:58:37,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-03 14:58:37,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-03 14:58:37,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-03 14:58:37,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-03 14:58:37,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-03 14:58:37,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-03 14:58:37,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:58:37,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:58:37,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:58:37,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:58:37,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:58:37,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:58:37,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:58:37,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:58:37,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:58:37,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:58:37,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:58:37,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:58:37,204 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:58:37,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:58:37,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:58:37,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:58:37,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:58:37,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:58:37,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:58:37,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:58:37,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:58:37,207 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:58:37,208 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:58:37,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:58:37,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:58:37,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:58:37,437 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:58:37,438 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:58:37,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1767.bpl [2022-10-03 14:58:37,439 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1767.bpl' [2022-10-03 14:58:37,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:58:37,513 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:58:37,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:58:37,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:58:37,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:58:37,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:58:37,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:58:37,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:58:37,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:58:37,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/1) ... [2022-10-03 14:58:37,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:58:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:58:37,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 14:58:37,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 14:58:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 14:58:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 14:58:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:58:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:58:37,711 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:58:37,882 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:58:37,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:58:38,873 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:58:38,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:58:38,904 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 14:58:38,910 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:38 BoogieIcfgContainer [2022-10-03 14:58:38,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:58:38,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:58:38,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:58:38,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:58:38,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:58:37" (1/2) ... [2022-10-03 14:58:38,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a507ed and model type divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:58:38, skipping insertion in model container [2022-10-03 14:58:38,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1767.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:58:38" (2/2) ... [2022-10-03 14:58:38,923 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1767.bpl [2022-10-03 14:58:38,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:58:38,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:58:38,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:58:38,937 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:58:39,088 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 14:58:39,144 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:58:39,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:58:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:58:39,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:58:39,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:58:39,204 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:58:39,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:58:39,219 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;@30790f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:58:39,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:58:39,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:58:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:58:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1325314334, now seen corresponding path program 1 times [2022-10-03 14:58:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:58:39,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753155879] [2022-10-03 14:58:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:58:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:58:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:58:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:58:39,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:58:39,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753155879] [2022-10-03 14:58:39,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753155879] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:58:39,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:58:39,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:58:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50814624] [2022-10-03 14:58:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:58:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:58:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:58:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:58:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:58:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:39,988 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:58:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:58:39,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:58:40,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:58:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:58:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1958392672, now seen corresponding path program 1 times [2022-10-03 14:58:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:58:40,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222469069] [2022-10-03 14:58:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:58:40,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:58:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:58:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:58:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:58:40,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222469069] [2022-10-03 14:58:40,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222469069] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:58:40,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:58:40,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-03 14:58:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588037217] [2022-10-03 14:58:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:58:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-03 14:58:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:58:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-03 14:58:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-03 14:58:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:40,270 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:58:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:58:40,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:40,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:58:41,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 14:58:41,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:58:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:58:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash -551581214, now seen corresponding path program 1 times [2022-10-03 14:58:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:58:41,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410223647] [2022-10-03 14:58:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:58:41,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:58:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:58:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:58:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:58:44,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410223647] [2022-10-03 14:58:44,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410223647] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:58:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211461960] [2022-10-03 14:58:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:58:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:58:44,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:58:44,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:58:44,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 14:58:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:58:45,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 8685 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-03 14:58:45,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:58:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:58:48,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:58:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:58:51,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211461960] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:58:51,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 14:58:51,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-03 14:58:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101481026] [2022-10-03 14:58:51,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 14:58:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 14:58:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:58:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 14:58:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-03 14:58:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:51,497 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:58:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 361.7142857142857) internal successors, (2532), 7 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:58:51,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:51,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:58:51,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:58:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 14:58:54,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-03 14:58:54,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-03 14:58:54,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:58:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:58:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1355272468, now seen corresponding path program 2 times [2022-10-03 14:58:54,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:58:54,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322896176] [2022-10-03 14:58:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:58:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:58:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:59:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 42354 proven. 294 refuted. 0 times theorem prover too weak. 86657 trivial. 0 not checked. [2022-10-03 14:59:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:59:19,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322896176] [2022-10-03 14:59:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322896176] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:59:19,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902489681] [2022-10-03 14:59:19,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 14:59:19,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:59:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:59:19,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:59:19,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-03 14:59:20,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 14:59:20,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 14:59:20,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-03 14:59:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:59:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 129305 trivial. 0 not checked. [2022-10-03 14:59:21,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:59:21,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902489681] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:59:21,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:59:21,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2022-10-03 14:59:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486940636] [2022-10-03 14:59:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:59:21,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-03 14:59:21,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:59:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-03 14:59:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-03 14:59:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:59:21,512 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:59:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 275.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:59:21,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:59:21,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:59:21,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-03 14:59:21,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.