/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.line1872.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-29 22:10:15,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 22:10:15,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 22:10:15,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 22:10:15,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 22:10:15,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 22:10:15,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 22:10:15,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 22:10:15,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 22:10:15,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 22:10:15,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 22:10:15,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 22:10:15,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 22:10:15,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 22:10:15,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 22:10:15,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 22:10:15,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 22:10:15,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 22:10:15,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 22:10:15,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 22:10:15,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 22:10:15,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 22:10:15,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 22:10:15,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 22:10:15,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-29 22:10:15,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-29 22:10:15,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-29 22:10:15,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-29 22:10:15,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-29 22:10:15,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-29 22:10:15,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-29 22:10:15,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-29 22:10:15,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-29 22:10:15,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-29 22:10:15,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-29 22:10:15,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-29 22:10:15,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-29 22:10:15,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-29 22:10:15,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 22:10:15,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 22:10:15,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 22:10:15,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-29 22:10:15,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 22:10:15,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 22:10:15,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 22:10:15,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 22:10:15,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-29 22:10:15,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-29 22:10:15,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 22:10:15,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 22:10:15,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-29 22:10:15,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 22:10:15,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:10:15,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-29 22:10:15,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-29 22:10:15,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-29 22:10:15,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 22:10:15,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 22:10:15,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 22:10:15,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 22:10:15,578 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 22:10:15,579 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 22:10:15,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1872.bpl [2022-09-29 22:10:15,580 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1872.bpl' [2022-09-29 22:10:15,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 22:10:15,662 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-29 22:10:15,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 22:10:15,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 22:10:15,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 22:10:15,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 22:10:15,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 22:10:15,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 22:10:15,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 22:10:15,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/1) ... [2022-09-29 22:10:15,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:10:15,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:15,828 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) [2022-09-29 22:10:15,835 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 [2022-09-29 22:10:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-09-29 22:10:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-09-29 22:10:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 22:10:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 22:10:15,864 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 22:10:15,971 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 22:10:15,972 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 22:10:16,894 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 22:10:16,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 22:10:16,931 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-29 22:10:16,936 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:10:16 BoogieIcfgContainer [2022-09-29 22:10:16,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 22:10:16,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-29 22:10:16,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-29 22:10:16,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-29 22:10:16,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:10:15" (1/2) ... [2022-09-29 22:10:16,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f558d6 and model type divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:10:16, skipping insertion in model container [2022-09-29 22:10:16,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1872.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:10:16" (2/2) ... [2022-09-29 22:10:16,950 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1872.bpl [2022-09-29 22:10:16,957 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-29 22:10:16,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-29 22:10:16,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-29 22:10:16,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-29 22:10:17,118 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-29 22:10:17,175 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-29 22:10:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-29 22:10:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:17,200 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) [2022-09-29 22:10:17,202 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 [2022-09-29 22:10:17,261 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-29 22:10:17,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-29 22:10:17,278 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;@61c717b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-29 22:10:17,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-29 22:10:17,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -991604201, now seen corresponding path program 1 times [2022-09-29 22:10:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:17,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015020438] [2022-09-29 22:10:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:10:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015020438] [2022-09-29 22:10:17,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015020438] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:10:17,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:10:17,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-29 22:10:17,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982498447] [2022-09-29 22:10:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:10:17,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-29 22:10:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:10:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-29 22:10:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-29 22:10:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:17,950 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:10:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 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) [2022-09-29 22:10:17,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-29 22:10:18,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash -296234576, now seen corresponding path program 1 times [2022-09-29 22:10:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892583767] [2022-09-29 22:10:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:10:18,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:18,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892583767] [2022-09-29 22:10:18,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892583767] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:10:18,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:10:18,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-29 22:10:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019765620] [2022-09-29 22:10:18,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:10:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-29 22:10:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:10:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-29 22:10:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-29 22:10:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:18,308 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:10:18,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2022-09-29 22:10:18,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:18,309 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-29 22:10:19,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 263122366, now seen corresponding path program 1 times [2022-09-29 22:10:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:19,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18935601] [2022-09-29 22:10:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18935601] [2022-09-29 22:10:22,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18935601] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:10:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549624629] [2022-09-29 22:10:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:22,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:10:22,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:22,608 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) [2022-09-29 22:10:22,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-29 22:10:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:23,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 8861 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-29 22:10:24,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:10:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:26,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 22:10:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:29,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549624629] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 22:10:29,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 22:10:29,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-29 22:10:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156964709] [2022-09-29 22:10:29,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 22:10:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-29 22:10:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:10:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-29 22:10:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-29 22:10:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:29,687 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:10:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 372.7142857142857) internal successors, (2609), 7 states have internal predecessors, (2609), 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) [2022-09-29 22:10:29,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:29,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:29,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:10:32,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-29 22:10:32,533 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 [2022-09-29 22:10:32,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2118669464, now seen corresponding path program 2 times [2022-09-29 22:10:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887817995] [2022-09-29 22:10:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 274 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-09-29 22:10:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887817995] [2022-09-29 22:10:59,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887817995] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:10:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490949892] [2022-09-29 22:10:59,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-29 22:10:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:10:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:59,388 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) [2022-09-29 22:10:59,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-29 22:11:02,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-29 22:11:02,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 22:11:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 93 conjunts are in the unsatisfiable core [2022-09-29 22:11:02,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:11:13,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-29 22:11:13,131 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 22:11:13,131 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 30 treesize of output 10 [2022-09-29 22:11:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-29 22:11:13,141 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 22:11:13,141 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 30 treesize of output 10 [2022-09-29 22:11:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 129305 trivial. 0 not checked. [2022-09-29 22:11:13,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-29 22:11:13,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490949892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:11:13,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-29 22:11:13,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [7] total 31 [2022-09-29 22:11:13,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115595778] [2022-09-29 22:11:13,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:11:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-29 22:11:13,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:11:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-29 22:11:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2022-09-29 22:11:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:11:13,208 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:11:13,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 45.26923076923077) internal successors, (1177), 26 states have internal predecessors, (1177), 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) [2022-09-29 22:11:13,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:11:13,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:11:13,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:11:13,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:11:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:11:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:11:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:11:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-29 22:11:19,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-29 22:11:19,442 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 [2022-09-29 22:11:19,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:11:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:11:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1395481428, now seen corresponding path program 1 times [2022-09-29 22:11:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:11:19,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411891188] [2022-09-29 22:11:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:11:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:11:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:11:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 274 proven. 99969 refuted. 0 times theorem prover too weak. 29062 trivial. 0 not checked. [2022-09-29 22:11:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:11:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411891188] [2022-09-29 22:11:41,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411891188] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:11:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323321444] [2022-09-29 22:11:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:11:41,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:11:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:11:41,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-29 22:11:41,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process