/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_1w1r.line1735.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:48:59,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:48:59,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:48:59,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:48:59,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:48:59,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:48:59,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:48:59,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:49:00,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:49:00,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:49:00,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:49:00,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:49:00,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:49:00,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:49:00,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:49:00,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:49:00,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:49:00,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:49:00,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:49:00,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:49:00,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:49:00,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:49:00,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:49:00,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:49:00,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:49:00,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:49:00,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:49:00,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:49:00,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:49:00,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:49:00,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:49:00,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:49:00,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:49:00,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:49:00,063 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:49:00,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:49:00,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:49:00,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:49:00,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:49:00,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:49:00,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:49:00,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:49:00,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:49:00,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:49:00,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:49:00,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:49:00,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:49:00,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:49:00,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:49:00,301 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:49:00,303 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:49:00,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1735.bpl [2022-10-03 15:49:00,305 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1735.bpl' [2022-10-03 15:49:00,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:49:00,377 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:49:00,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:49:00,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:49:00,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:49:00,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:49:00,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:49:00,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:49:00,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:49:00,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/1) ... [2022-10-03 15:49:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:49:00,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:49:00,550 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 15:49:00,587 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 15:49:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:49:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:49:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:49:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:49:00,603 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 15:49:00,792 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:49:00,793 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:49:01,661 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:49:01,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:49:01,693 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:49:01,698 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:49:01 BoogieIcfgContainer [2022-10-03 15:49:01,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:49:01,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:49:01,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:49:01,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:49:01,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:49:00" (1/2) ... [2022-10-03 15:49:01,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0ae261 and model type divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:49:01, skipping insertion in model container [2022-10-03 15:49:01,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1735.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:49:01" (2/2) ... [2022-10-03 15:49:01,706 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1735.bpl [2022-10-03 15:49:01,711 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:49:01,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:49:01,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:49:01,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:49:01,836 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:49:01,892 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:49:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:49:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:49:01,898 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 15:49:01,904 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 15:49:01,932 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:49:01,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:49:01,943 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;@27f035c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:49:01,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:49:02,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:49:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:49:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -87138725, now seen corresponding path program 1 times [2022-10-03 15:49:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:49:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732292412] [2022-10-03 15:49:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:49:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:49:02,539 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 15:49:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:49:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732292412] [2022-10-03 15:49:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732292412] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:49:02,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:49:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:49:02,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776170223] [2022-10-03 15:49:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:49:02,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:49:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:49:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:49:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:49:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:02,567 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:49:02,569 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 15:49:02,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:49:02,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:49:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:49:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1616523156, now seen corresponding path program 1 times [2022-10-03 15:49:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:49:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869953390] [2022-10-03 15:49:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:49:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:49:02,916 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 15:49:02,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:49:02,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869953390] [2022-10-03 15:49:02,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869953390] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:49:02,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:49:02,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-03 15:49:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307115756] [2022-10-03 15:49:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:49:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-03 15:49:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:49:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-03 15:49:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-03 15:49:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:02,920 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:49:02,920 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 15:49:02,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:02,920 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:49:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:49:03,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:49:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:49:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash -426871825, now seen corresponding path program 1 times [2022-10-03 15:49:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:49:03,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903309490] [2022-10-03 15:49:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:49:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:49:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9782 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9780 trivial. 0 not checked. [2022-10-03 15:49:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:49:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903309490] [2022-10-03 15:49:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903309490] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:49:06,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974293915] [2022-10-03 15:49:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:06,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:49:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:49:06,470 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 15:49:06,471 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 15:49:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:49:07,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 8269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-03 15:49:07,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:49:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9782 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9780 trivial. 0 not checked. [2022-10-03 15:49:10,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 15:49:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9782 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9780 trivial. 0 not checked. [2022-10-03 15:49:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974293915] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 15:49:13,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 15:49:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-03 15:49:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56357507] [2022-10-03 15:49:13,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 15:49:13,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 15:49:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:49:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 15:49:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-03 15:49:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:13,330 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:49:13,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 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 15:49:13,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:13,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:49:13,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:49:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:49:15,767 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 15:49:15,938 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 15:49:15,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:49:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:49:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1786523214, now seen corresponding path program 2 times [2022-10-03 15:49:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:49:15,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389427338] [2022-10-03 15:49:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:49:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:49:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 120047 backedges. 274 proven. 92833 refuted. 0 times theorem prover too weak. 26940 trivial. 0 not checked. [2022-10-03 15:49:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:49:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389427338] [2022-10-03 15:49:40,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389427338] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:49:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3497602] [2022-10-03 15:49:40,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 15:49:40,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:49:40,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:49:40,188 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 15:49:40,255 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 15:49:42,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 15:49:42,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 15:49:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-03 15:49:42,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:49:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 120047 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 119773 trivial. 0 not checked. [2022-10-03 15:49:53,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:49:53,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3497602] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:49:53,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:49:53,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2022-10-03 15:49:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253839324] [2022-10-03 15:49:53,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:49:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-03 15:49:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:49:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-03 15:49:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-10-03 15:49:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:53,795 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:49:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 116.5) internal successors, (1165), 11 states have internal predecessors, (1165), 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 15:49:53,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:53,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:49:53,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:49:53,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:49:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:49:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:49:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-03 15:49:56,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-03 15:49:56,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:49:56,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:49:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:49:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash 954663896, now seen corresponding path program 3 times [2022-10-03 15:49:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:49:56,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466112499] [2022-10-03 15:49:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:49:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:50:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:50:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 120680 backedges. 816 proven. 92833 refuted. 0 times theorem prover too weak. 27031 trivial. 0 not checked. [2022-10-03 15:50:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:50:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466112499] [2022-10-03 15:50:17,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466112499] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:50:17,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084037999] [2022-10-03 15:50:17,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-03 15:50:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:50:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:50:17,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 15:50:17,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-03 15:50:19,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-10-03 15:50:19,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 15:50:19,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-03 15:50:19,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:50:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 120680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120680 trivial. 0 not checked. [2022-10-03 15:50:30,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:50:30,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084037999] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:50:30,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:50:30,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-10-03 15:50:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996771674] [2022-10-03 15:50:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:50:30,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-03 15:50:30,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:50:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-03 15:50:30,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-10-03 15:50:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:50:30,653 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:50:30,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 134.375) internal successors, (1075), 9 states have internal predecessors, (1075), 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 15:50:30,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:50:30,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:50:30,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:50:30,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-10-03 15:50:30,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.