/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.line1896.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:01:03,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:01:03,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:01:03,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:01:03,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:01:03,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:01:03,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:01:03,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:01:03,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:01:03,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:01:03,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:01:03,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:01:03,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:01:03,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:01:03,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:01:03,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:01:03,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:01:03,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:01:03,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:01:03,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:01:03,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:01:03,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:01:03,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:01:03,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:01:03,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:01:03,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:01:03,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:01:03,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:01:03,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:01:03,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:01:03,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:01:03,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:01:03,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:01:03,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:01:03,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:01:03,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:01:03,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:01:03,874 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:01:03,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:01:03,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:01:03,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:01:03,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:01:03,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:01:03,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:01:03,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:01:04,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:01:04,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:01:04,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:01:04,084 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:01:04,088 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:01:04,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1896.bpl [2022-10-03 15:01:04,089 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1896.bpl' [2022-10-03 15:01:04,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:01:04,169 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:01:04,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:01:04,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:01:04,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:01:04,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:01:04,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:01:04,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:01:04,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:01:04,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/1) ... [2022-10-03 15:01:04,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:01:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:01:04,309 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 15:01:04,332 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 15:01:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:01:04,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:01:04,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:01:04,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:01:04,349 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 15:01:04,523 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:01:04,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:01:05,444 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:01:05,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:01:05,479 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:01:05,483 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:01:05 BoogieIcfgContainer [2022-10-03 15:01:05,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:01:05,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:01:05,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:01:05,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:01:05,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:01:04" (1/2) ... [2022-10-03 15:01:05,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479ad02d and model type divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:01:05, skipping insertion in model container [2022-10-03 15:01:05,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1896.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:01:05" (2/2) ... [2022-10-03 15:01:05,493 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1896.bpl [2022-10-03 15:01:05,499 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:01:05,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:01:05,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:01:05,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:01:05,670 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:01:05,728 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:01:05,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:01:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:01:05,731 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 15:01:05,733 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 15:01:05,767 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:01:05,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:01:05,781 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;@60532f29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:01:05,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:01:05,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:01:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:01:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1882805398, now seen corresponding path program 1 times [2022-10-03 15:01:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:01:06,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497459767] [2022-10-03 15:01:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:01:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:01:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:01:06,416 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 15:01:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:01:06,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497459767] [2022-10-03 15:01:06,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497459767] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:01:06,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:01:06,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:01:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129690366] [2022-10-03 15:01:06,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:01:06,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:01:06,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:01:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:01:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:01:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:06,449 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:01:06,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 222.0) internal successors, (444), 2 states have internal predecessors, (444), 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 15:01:06,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:01:06,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:01:06,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:01:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1147519600, now seen corresponding path program 1 times [2022-10-03 15:01:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:01:06,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661356845] [2022-10-03 15:01:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:01:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:01:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:01:06,830 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 15:01:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:01:06,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661356845] [2022-10-03 15:01:06,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661356845] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:01:06,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:01:06,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-03 15:01:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155850870] [2022-10-03 15:01:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:01:06,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-03 15:01:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:01:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-03 15:01:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-03 15:01:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:06,842 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:01:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 15:01:06,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:06,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:01:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:01:08,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:01:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:01:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2092146286, now seen corresponding path program 1 times [2022-10-03 15:01:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:01:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611153022] [2022-10-03 15:01:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:01:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:01:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:01:11,228 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 15:01:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:01:11,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611153022] [2022-10-03 15:01:11,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611153022] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:01:11,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38501053] [2022-10-03 15:01:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:01:11,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:01:11,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:01:11,233 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 15:01:11,234 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 15:01:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:01:12,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 8903 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-03 15:01:12,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:01:15,868 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 15:01:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 15:01:18,678 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 15:01:18,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38501053] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 15:01:18,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 15:01:18,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-03 15:01:18,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753646740] [2022-10-03 15:01:18,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 15:01:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 15:01:18,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:01:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 15:01:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-03 15:01:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:18,688 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:01:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 375.2857142857143) internal successors, (2627), 7 states have internal predecessors, (2627), 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 15:01:18,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:18,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:01:18,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:01:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:01:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:01:21,590 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 15:01:21,779 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 15:01:21,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:01:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:01:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1026063712, now seen corresponding path program 2 times [2022-10-03 15:01:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:01:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45523543] [2022-10-03 15:01:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:01:21,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:01:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:01:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 274 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-10-03 15:01:46,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:01:46,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45523543] [2022-10-03 15:01:46,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45523543] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:01:46,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171525063] [2022-10-03 15:01:46,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 15:01:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:01:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:01:46,628 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 15:01:46,658 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 15:01:49,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 15:01:49,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 15:01:49,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-03 15:01:49,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:02:03,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-10-03 15:02:03,192 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:02:03,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-10-03 15:02:03,238 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 15:02:03,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:02:03,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171525063] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:02:03,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:02:03,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2022-10-03 15:02:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543263592] [2022-10-03 15:02:03,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:02:03,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-03 15:02:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:02:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-03 15:02:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-10-03 15:02:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:02:03,247 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:02:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.31818181818182) internal successors, (1195), 22 states have internal predecessors, (1195), 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 15:02:03,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:02:03,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:02:03,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:02:03,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:02:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:02:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 15:02:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 15:02:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 15:02:08,564 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 15:02:08,743 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 15:02:08,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:02:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:02:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash -376223882, now seen corresponding path program 1 times [2022-10-03 15:02:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:02:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779933280] [2022-10-03 15:02:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:02:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:02:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat