/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.line1690.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:56:47,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:56:47,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:56:47,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:56:47,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:56:47,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:56:47,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:56:47,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:56:47,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:56:47,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:56:47,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:56:47,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:56:47,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:56:47,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:56:47,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:56:47,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:56:47,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:56:47,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:56:47,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:56:47,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:56:47,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:56:47,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:56:47,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:56:47,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:56:47,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 14:56:47,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:56:47,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:56:47,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:56:47,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:56:47,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:56:47,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:56:47,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:56:47,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:56:47,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:56:47,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:56:47,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:56:47,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:56:47,538 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:56:47,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:56:47,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:56:47,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:56:47,540 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:56:47,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:56:47,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:56:47,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:56:47,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:56:47,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:56:47,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:56:47,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:56:47,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:56:47,543 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:56:47,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:56:47,544 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:56:47,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:56:47,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:56:47,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:56:47,808 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:56:47,809 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:56:47,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1690.bpl [2022-10-03 14:56:47,811 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1690.bpl' [2022-10-03 14:56:47,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:56:47,908 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:56:47,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:56:47,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:56:47,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:56:47,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:47,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:47,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:47,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:48,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:48,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:48,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:48,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:56:48,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:56:48,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:56:48,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:56:48,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/1) ... [2022-10-03 14:56:48,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:56:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:56:48,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 14:56:48,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 14:56:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 14:56:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 14:56:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:56:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:56:48,184 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:56:48,441 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:56:48,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:56:49,566 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:56:49,588 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:56:49,588 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 14:56:49,591 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:56:49 BoogieIcfgContainer [2022-10-03 14:56:49,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:56:49,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:56:49,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:56:49,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:56:49,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:56:47" (1/2) ... [2022-10-03 14:56:49,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fa3ada and model type divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:56:49, skipping insertion in model container [2022-10-03 14:56:49,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1690.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:56:49" (2/2) ... [2022-10-03 14:56:49,601 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1690.bpl [2022-10-03 14:56:49,608 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:56:49,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:56:49,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:56:49,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:56:49,740 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 14:56:49,803 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:56:49,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:56:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:56:49,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:56:49,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:56:49,847 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:56:49,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:56:49,860 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;@67b74a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:56:49,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:56:50,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:56:50,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:56:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2960446, now seen corresponding path program 1 times [2022-10-03 14:56:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:56:50,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854751352] [2022-10-03 14:56:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:56:50,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:56:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:56:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:56:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:56:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854751352] [2022-10-03 14:56:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854751352] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:56:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:56:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:56:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819556827] [2022-10-03 14:56:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:56:50,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:56:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:56:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:56:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:56:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:50,534 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:56:50,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:56:50,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:50,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:56:50,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:56:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:56:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1515879393, now seen corresponding path program 1 times [2022-10-03 14:56:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:56:50,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229185110] [2022-10-03 14:56:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:56:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:56:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:56:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:56:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:56:50,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229185110] [2022-10-03 14:56:50,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229185110] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:56:50,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:56:50,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-03 14:56:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487734163] [2022-10-03 14:56:50,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:56:50,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-03 14:56:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:56:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-03 14:56:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-03 14:56:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:50,741 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:56:50,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:56:50,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:50,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:56:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:56:52,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 14:56:52,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:56:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:56:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 614328631, now seen corresponding path program 1 times [2022-10-03 14:56:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:56:52,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356849216] [2022-10-03 14:56:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:56:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:56:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:56:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10549 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:56:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:56:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356849216] [2022-10-03 14:56:56,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356849216] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:56:56,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762374471] [2022-10-03 14:56:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:56:56,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:56:56,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:56:56,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:56:56,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 14:56:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:56:58,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 8415 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-03 14:56:58,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:57:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10549 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:57:02,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:57:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10549 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-10-03 14:57:05,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762374471] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:57:05,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 14:57:05,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-03 14:57:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424092764] [2022-10-03 14:57:05,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 14:57:05,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 14:57:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:57:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 14:57:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-03 14:57:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:57:05,327 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:57:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 346.2857142857143) internal successors, (2424), 7 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:57:05,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:57:05,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:57:05,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:57:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:57:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:57:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-03 14:57:08,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-03 14:57:09,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-03 14:57:09,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:57:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:57:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -646633161, now seen corresponding path program 1 times [2022-10-03 14:57:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:57:09,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510067343] [2022-10-03 14:57:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:57:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:57:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:57:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 129031 backedges. 42164 proven. 210 refuted. 0 times theorem prover too weak. 86657 trivial. 0 not checked. [2022-10-03 14:57:36,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:57:36,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510067343] [2022-10-03 14:57:36,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510067343] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:57:36,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988178968] [2022-10-03 14:57:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:57:36,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:57:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:57:36,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:57:36,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-03 14:57:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:57:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 27147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-03 14:57:41,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:57:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 129031 backedges. 0 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-10-03 14:57:53,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:58:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 129031 backedges. 0 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-10-03 14:58:05,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988178968] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:58:05,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 14:58:05,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2022-10-03 14:58:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432442991] [2022-10-03 14:58:05,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 14:58:05,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-03 14:58:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:58:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-03 14:58:05,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-10-03 14:58:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:05,981 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:58:05,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 355.4117647058824) internal successors, (6042), 17 states have internal predecessors, (6042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:58:05,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:58:05,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:58:05,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-03 14:58:05,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.