/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/parallel-bakery-4.wvr.line917.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 05:04:54,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 05:04:54,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 05:04:54,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-30 05:04:54,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-30 05:04:54,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-30 05:04:54,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-30 05:04:54,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-30 05:04:54,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-30 05:04:54,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-30 05:04:54,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-30 05:04:54,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-30 05:04:54,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-30 05:04:54,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-30 05:04:54,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-30 05:04:54,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-30 05:04:54,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-30 05:04:54,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-30 05:04:54,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-30 05:04:54,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-30 05:04:54,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-30 05:04:54,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-30 05:04:54,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-30 05:04:54,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-30 05:04:54,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-30 05:04:54,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-30 05:04:54,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-30 05:04:54,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-30 05:04:54,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 05:04:54,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 05:04:54,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 05:04:54,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 05:04:54,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 05:04:54,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 05:04:54,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 05:04:54,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 05:04:54,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 05:04:54,321 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 05:04:54,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 05:04:54,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 05:04:54,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 05:04:54,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 05:04:54,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 05:04:54,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 05:04:54,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 05:04:54,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 05:04:54,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 05:04:54,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 05:04:54,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 05:04:54,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 05:04:54,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 05:04:54,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 05:04:54,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 05:04:54,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 05:04:54,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 05:04:54,547 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 05:04:54,548 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 05:04:54,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/parallel-bakery-4.wvr.line917.bpl [2022-09-30 05:04:54,549 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/parallel-bakery-4.wvr.line917.bpl' [2022-09-30 05:04:54,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 05:04:54,598 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 05:04:54,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 05:04:54,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 05:04:54,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 05:04:54,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 05:04:54,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 05:04:54,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 05:04:54,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 05:04:54,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/1) ... [2022-09-30 05:04:54,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 05:04:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:04:54,701 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) [2022-09-30 05:04:54,704 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 [2022-09-30 05:04:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-30 05:04:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-30 05:04:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-30 05:04:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-30 05:04:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-30 05:04:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-30 05:04:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-30 05:04:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-30 05:04:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 05:04:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 05:04:54,731 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 05:04:54,801 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 05:04:54,802 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 05:04:55,451 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 05:04:55,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 05:04:55,471 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-30 05:04:55,473 INFO L202 PluginConnector]: Adding new model parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 05:04:55 BoogieIcfgContainer [2022-09-30 05:04:55,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 05:04:55,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 05:04:55,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 05:04:55,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 05:04:55,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 05:04:54" (1/2) ... [2022-09-30 05:04:55,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45947981 and model type parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 05:04:55, skipping insertion in model container [2022-09-30 05:04:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-bakery-4.wvr.line917.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 05:04:55" (2/2) ... [2022-09-30 05:04:55,482 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.line917.bpl [2022-09-30 05:04:55,488 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 05:04:55,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 05:04:55,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 05:04:55,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 05:04:55,620 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-30 05:04:55,687 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 05:04:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 05:04:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 05:04:55,699 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) [2022-09-30 05:04:55,700 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 [2022-09-30 05:04:55,757 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 05:04:55,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 05:04:55,773 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;@2c0143de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 05:04:55,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 05:04:55,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 05:04:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 05:04:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash 628143823, now seen corresponding path program 1 times [2022-09-30 05:04:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 05:04:55,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263062625] [2022-09-30 05:04:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:04:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 05:04:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:04:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 05:04:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 05:04:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263062625] [2022-09-30 05:04:56,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263062625] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 05:04:56,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 05:04:56,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 05:04:56,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682582903] [2022-09-30 05:04:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 05:04:56,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 05:04:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 05:04:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 05:04:56,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 05:04:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:04:56,377 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 05:04:56,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-09-30 05:04:56,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:04:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:04:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 05:04:56,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 05:04:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 05:04:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1134630119, now seen corresponding path program 1 times [2022-09-30 05:04:56,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 05:04:56,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479406666] [2022-09-30 05:04:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 05:04:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 05:04:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 05:04:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 05:04:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 05:04:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479406666] [2022-09-30 05:04:56,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479406666] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 05:04:56,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 05:04:56,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-30 05:04:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473470348] [2022-09-30 05:04:56,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 05:04:56,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-30 05:04:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 05:04:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-30 05:04:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-30 05:04:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:04:56,724 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 05:04:56,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 29.5) internal successors, (177), 7 states have internal predecessors, (177), 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) [2022-09-30 05:04:56,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 05:04:56,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.