/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.line1348.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:26:54,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:26:54,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:26:54,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:26:54,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:26:54,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:26:54,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:26:54,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:26:54,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:26:54,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:26:54,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:26:54,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:26:54,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:26:54,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:26:54,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:26:54,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:26:54,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:26:54,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:26:54,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:26:54,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:26:54,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:26:54,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:26:54,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:26:54,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:26:54,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:26:54,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:26:54,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:26:54,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:26:54,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:26:54,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:26:54,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:26:54,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:26:54,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:26:54,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:26:54,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:26:54,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:26:54,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:26:54,384 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:26:54,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:26:54,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:26:54,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:26:54,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:26:54,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:26:54,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:26:54,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:26:54,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:26:54,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:26:54,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:26:54,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:26:54,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:26:54,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:26:54,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:26:54,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:26:54,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:26:54,389 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:26:54,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:26:54,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:26:54,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:26:54,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:26:54,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:26:54,644 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:26:54,651 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:26:54,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1348.bpl [2022-10-03 15:26:54,653 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1348.bpl' [2022-10-03 15:26:54,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:26:54,742 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:26:54,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:26:54,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:26:54,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:26:54,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:26:54,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:26:54,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:26:54,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:26:54,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/1) ... [2022-10-03 15:26:54,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:26:54,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:26:54,948 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 15:26:54,954 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 15:26:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:26:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:26:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:26:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:26:54,993 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 15:26:55,180 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:26:55,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:26:56,222 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:26:56,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:26:56,250 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:26:56,253 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:26:56 BoogieIcfgContainer [2022-10-03 15:26:56,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:26:56,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:26:56,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:26:56,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:26:56,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:26:54" (1/2) ... [2022-10-03 15:26:56,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3caeb and model type divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:26:56, skipping insertion in model container [2022-10-03 15:26:56,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1348.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:26:56" (2/2) ... [2022-10-03 15:26:56,264 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1348.bpl [2022-10-03 15:26:56,271 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:26:56,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:26:56,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:26:56,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:26:56,434 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:26:56,486 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:26:56,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:26:56,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:26:56,489 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 15:26:56,494 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 15:26:56,522 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:26:56,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:26:56,535 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;@52495177, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:26:56,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:26:56,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:26:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:26:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1328478074, now seen corresponding path program 1 times [2022-10-03 15:26:56,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:26:56,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804664912] [2022-10-03 15:26:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:26:56,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:26:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:26:57,458 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 15:26:57,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:26:57,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804664912] [2022-10-03 15:26:57,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804664912] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:26:57,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:26:57,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:26:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250636279] [2022-10-03 15:26:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:26:57,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:26:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:26:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:26:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:26:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:57,495 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:26:57,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 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 15:26:57,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:26:57,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:26:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:26:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -498320723, now seen corresponding path program 1 times [2022-10-03 15:26:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:26:57,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399534078] [2022-10-03 15:26:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:26:57,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:26:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:26:58,417 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 15:26:58,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:26:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399534078] [2022-10-03 15:26:58,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399534078] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:26:58,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:26:58,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-03 15:26:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300912716] [2022-10-03 15:26:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:26:58,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-03 15:26:58,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:26:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-03 15:26:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-03 15:26:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:58,422 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:26:58,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 67.88888888888889) internal successors, (611), 10 states have internal predecessors, (611), 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 15:26:58,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:58,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:26:59,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:26:59,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:26:59,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:26:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash -414768986, now seen corresponding path program 1 times [2022-10-03 15:26:59,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:26:59,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084388339] [2022-10-03 15:26:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:26:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:26:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:26:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 15:26:59,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:26:59,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084388339] [2022-10-03 15:26:59,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084388339] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:26:59,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:26:59,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 15:26:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272882703] [2022-10-03 15:26:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:26:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-03 15:26:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:26:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-03 15:26:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-03 15:26:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:59,850 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:26:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 128.0) internal successors, (896), 8 states have internal predecessors, (896), 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 15:26:59,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:26:59,850 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:26:59,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:27:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:27:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:27:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-03 15:27:05,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 15:27:05,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:27:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:27:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1589894674, now seen corresponding path program 1 times [2022-10-03 15:27:05,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:27:05,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8943886] [2022-10-03 15:27:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:27:05,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:27:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:27:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 128117 backedges. 90464 proven. 28431 refuted. 0 times theorem prover too weak. 9222 trivial. 0 not checked. [2022-10-03 15:27:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:27:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8943886] [2022-10-03 15:27:33,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8943886] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:27:33,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640321424] [2022-10-03 15:27:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:27:33,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:27:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:27:33,440 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 15:27:33,441 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 15:27:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:27:38,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 27419 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-03 15:27:38,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:27:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 128117 backedges. 109950 proven. 0 refuted. 0 times theorem prover too weak. 18167 trivial. 0 not checked. [2022-10-03 15:27:46,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:27:46,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640321424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:27:46,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:27:46,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 15 [2022-10-03 15:27:46,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522599709] [2022-10-03 15:27:46,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:27:46,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-03 15:27:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:27:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-03 15:27:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2022-10-03 15:27:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:27:46,089 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:27:46,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 435.4) internal successors, (4354), 10 states have internal predecessors, (4354), 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 15:27:46,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:27:46,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-10-03 15:27:46,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-10-03 15:27:46,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.