/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.line1260.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:30:00,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:30:00,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:30:00,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:30:00,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:30:00,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:30:00,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:30:00,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:30:00,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:30:00,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:30:00,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:30:00,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:30:00,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:30:00,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:30:00,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:30:00,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:30:00,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:30:00,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:30:00,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:30:00,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:30:00,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:30:00,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:30:00,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:30:00,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:30:00,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-03 14:30:00,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-03 14:30:00,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-03 14:30:00,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-03 14:30:00,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-03 14:30:00,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-10-03 14:30:00,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:30:00,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:30:00,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:30:00,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:30:00,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:30:00,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:30:00,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:30:00,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:30:00,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:30:00,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:30:00,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:30:00,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:30:00,388 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:30:00,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:30:00,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:30:00,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:30:00,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:30:00,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:30:00,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:30:00,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:30:00,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:30:00,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:30:00,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:30:00,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:30:00,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:30:00,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:30:00,393 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:30:00,393 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:30:00,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:30:00,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:30:00,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:30:00,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:30:00,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:30:00,600 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:30:00,601 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:30:00,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1260.bpl [2022-10-03 14:30:00,602 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1260.bpl' [2022-10-03 14:30:00,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:30:00,671 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:30:00,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:30:00,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:30:00,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:30:00,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:30:00,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:30:00,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:30:00,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:30:00,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/1) ... [2022-10-03 14:30:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:30:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:30:00,801 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 14:30:00,803 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 14:30:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 14:30:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 14:30:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:30:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:30:00,832 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 14:30:00,957 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:30:00,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:30:01,830 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:30:01,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:30:01,845 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 14:30:01,847 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:01 BoogieIcfgContainer [2022-10-03 14:30:01,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:30:01,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:30:01,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:30:01,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:30:01,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:30:00" (1/2) ... [2022-10-03 14:30:01,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc11f32 and model type divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:30:01, skipping insertion in model container [2022-10-03 14:30:01,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1260.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:30:01" (2/2) ... [2022-10-03 14:30:01,855 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1260.bpl [2022-10-03 14:30:01,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:30:01,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:30:01,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:30:01,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:30:01,996 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 14:30:02,051 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:30:02,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:30:02,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:30:02,057 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 14:30:02,058 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 14:30:02,079 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:30:02,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:30:02,088 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;@282f2624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:30:02,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:30:02,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:02,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2096042876, now seen corresponding path program 1 times [2022-10-03 14:30:02,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:02,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211117177] [2022-10-03 14:30:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:02,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:02,789 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 14:30:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211117177] [2022-10-03 14:30:02,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211117177] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:30:02,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:30:02,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:30:02,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522344509] [2022-10-03 14:30:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:30:02,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:30:02,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:30:02,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:30:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:30:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:02,823 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:30:02,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 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 14:30:02,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:02,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:30:02,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash -75859607, now seen corresponding path program 1 times [2022-10-03 14:30:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:02,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113010062] [2022-10-03 14:30:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:02,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:03,708 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 14:30:03,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:03,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113010062] [2022-10-03 14:30:03,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113010062] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:30:03,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:30:03,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-03 14:30:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317450744] [2022-10-03 14:30:03,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:30:03,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-03 14:30:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:30:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-03 14:30:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-10-03 14:30:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:03,714 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:30:03,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 33.625) internal successors, (538), 17 states have internal predecessors, (538), 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 14:30:03,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:03,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-03 14:30:05,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 14:30:05,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1039928614, now seen corresponding path program 1 times [2022-10-03 14:30:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:05,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464576958] [2022-10-03 14:30:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 14:30:05,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464576958] [2022-10-03 14:30:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464576958] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:30:05,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861534593] [2022-10-03 14:30:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:05,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:30:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:30:05,774 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 14:30:05,775 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 14:30:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:06,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 181 conjunts are in the unsatisfiable core [2022-10-03 14:30:06,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:30:06,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-03 14:30:06,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:06,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-03 14:30:06,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 14:30:07,109 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-03 14:30:07,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-10-03 14:30:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:07,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-10-03 14:30:09,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2022-10-03 14:30:10,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 14:30:10,701 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:30:10,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 67 [2022-10-03 14:30:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:11,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2022-10-03 14:30:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:30:12,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:30:12,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861534593] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:30:12,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:30:12,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [11] total 64 [2022-10-03 14:30:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770218460] [2022-10-03 14:30:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:30:12,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-03 14:30:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:30:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-03 14:30:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3776, Unknown=0, NotChecked=0, Total=4032 [2022-10-03 14:30:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:12,510 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:30:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 15.875) internal successors, (889), 56 states have internal predecessors, (889), 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 14:30:12,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:12,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-10-03 14:30:12,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-03 14:30:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:30:16,554 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 14:30:16,739 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 14:30:16,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1087300774, now seen corresponding path program 2 times [2022-10-03 14:30:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:16,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653200462] [2022-10-03 14:30:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:30:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653200462] [2022-10-03 14:30:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653200462] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:30:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286825155] [2022-10-03 14:30:17,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 14:30:17,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:30:17,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:30:17,260 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 14:30:17,261 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 14:30:17,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 14:30:17,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 14:30:17,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 220 conjunts are in the unsatisfiable core [2022-10-03 14:30:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:30:17,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 14:30:18,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:30:18,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:30:19,547 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-10-03 14:30:19,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-10-03 14:30:19,830 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-10-03 14:30:19,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 69 [2022-10-03 14:30:19,837 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-03 14:30:19,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 58 [2022-10-03 14:30:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-03 14:30:21,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:30:21,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286825155] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:30:21,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:30:21,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [11] total 72 [2022-10-03 14:30:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277043616] [2022-10-03 14:30:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:30:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-03 14:30:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:30:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-03 14:30:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=4880, Unknown=0, NotChecked=0, Total=5112 [2022-10-03 14:30:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:21,975 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:30:21,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 13.935483870967742) internal successors, (864), 62 states have internal predecessors, (864), 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 14:30:21,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:21,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-10-03 14:30:21,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:30:21,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:30:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:30:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:30:40,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-03 14:30:40,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:30:40,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 11798425, now seen corresponding path program 1 times [2022-10-03 14:30:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:40,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744086156] [2022-10-03 14:30:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:41,283 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 14:30:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744086156] [2022-10-03 14:30:41,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744086156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:30:41,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:30:41,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-10-03 14:30:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060103859] [2022-10-03 14:30:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:30:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-03 14:30:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:30:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-03 14:30:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-10-03 14:30:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:41,286 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:30:41,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 40.0) internal successors, (600), 16 states have internal predecessors, (600), 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 14:30:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:30:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:30:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:30:41,286 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:30:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:30:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:30:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:30:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:30:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-03 14:30:43,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:30:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:30:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1874320028, now seen corresponding path program 1 times [2022-10-03 14:30:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:30:43,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546405600] [2022-10-03 14:30:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:30:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 14:30:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:30:44,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546405600] [2022-10-03 14:30:44,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546405600] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:30:44,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180570043] [2022-10-03 14:30:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:30:44,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:30:44,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:30:44,172 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) [2022-10-03 14:30:44,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-03 14:30:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:30:44,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 527 conjunts are in the unsatisfiable core [2022-10-03 14:30:44,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:30:45,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-03 14:30:45,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-03 14:30:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:45,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-03 14:30:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:45,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-03 14:30:45,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:45,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-03 14:30:45,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:45,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-03 14:30:47,487 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 14:30:47,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-03 14:30:47,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:47,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:30:47,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2022-10-03 14:30:47,975 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-10-03 14:30:47,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 49 [2022-10-03 14:30:57,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:30:57,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:31:07,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:07,452 INFO L356 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-10-03 14:31:07,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 40 [2022-10-03 14:31:07,475 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-03 14:31:07,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-10-03 14:31:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:07,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-03 14:31:15,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:15,757 INFO L356 Elim1Store]: treesize reduction 64, result has 30.4 percent of original size [2022-10-03 14:31:15,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 99 [2022-10-03 14:31:15,783 INFO L356 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2022-10-03 14:31:15,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 77 [2022-10-03 14:31:18,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-03 14:31:19,823 INFO L356 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2022-10-03 14:31:19,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-10-03 14:31:27,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,481 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-03 14:31:27,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-10-03 14:31:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:27,506 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-03 14:31:27,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 97 [2022-10-03 14:31:28,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,815 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-03 14:31:28,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-10-03 14:31:28,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:28,834 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:31:28,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 50 [2022-10-03 14:31:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 14:31:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,572 INFO L356 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2022-10-03 14:31:29,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 75 [2022-10-03 14:31:29,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:29,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-10-03 14:31:29,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 4 [2022-10-03 14:31:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,333 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-10-03 14:31:30,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 66 [2022-10-03 14:31:30,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:30,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-10-03 14:31:32,125 INFO L356 Elim1Store]: treesize reduction 73, result has 11.0 percent of original size [2022-10-03 14:31:32,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 72 [2022-10-03 14:31:32,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 14:31:32,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-10-03 14:31:32,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:32,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-10-03 14:31:32,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:32,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-10-03 14:31:32,854 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-03 14:31:32,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2022-10-03 14:31:33,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:33,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 14:31:33,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 14:31:33,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2022-10-03 14:31:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:31:33,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:31:33,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180570043] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:31:33,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:31:33,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [145] imperfect sequences [11] total 154 [2022-10-03 14:31:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399337710] [2022-10-03 14:31:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:31:33,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-10-03 14:31:33,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:31:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-10-03 14:31:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=22867, Unknown=4, NotChecked=0, Total=23562 [2022-10-03 14:31:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:31:33,554 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:31:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 7.220689655172414) internal successors, (1047), 145 states have internal predecessors, (1047), 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 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:31:33,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:33:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-10-03 14:33:55,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-03 14:33:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:33:55,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:33:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:33:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1142404199, now seen corresponding path program 2 times [2022-10-03 14:33:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:33:55,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409350167] [2022-10-03 14:33:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:33:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:33:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:33:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 587 proven. 136 refuted. 0 times theorem prover too weak. 1269 trivial. 0 not checked. [2022-10-03 14:33:56,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:33:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409350167] [2022-10-03 14:33:56,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409350167] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:33:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481116652] [2022-10-03 14:33:56,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 14:33:56,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:33:56,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:33:56,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:33:56,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-03 14:33:57,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 14:33:57,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 14:33:57,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-03 14:33:57,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:33:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2022-10-03 14:33:57,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:33:57,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481116652] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:33:57,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:33:57,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2022-10-03 14:33:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194638864] [2022-10-03 14:33:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:33:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-03 14:33:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:33:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-03 14:33:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-10-03 14:33:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:57,676 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:33:57,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 152.125) internal successors, (1217), 9 states have internal predecessors, (1217), 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 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 314 states. [2022-10-03 14:33:57,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:33:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:33:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:33:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:33:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:33:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-10-03 14:33:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-03 14:33:58,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-03 14:33:58,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:33:58,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:33:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:33:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash 61917150, now seen corresponding path program 3 times [2022-10-03 14:33:58,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:33:58,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660832451] [2022-10-03 14:33:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:33:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:33:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:34:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3448 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 3229 trivial. 0 not checked. [2022-10-03 14:34:00,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:34:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660832451] [2022-10-03 14:34:00,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660832451] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:34:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098078852] [2022-10-03 14:34:00,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-03 14:34:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:34:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:34:00,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:34:00,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-03 14:34:01,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-10-03 14:34:01,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 14:34:01,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-03 14:34:01,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:34:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3448 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 3353 trivial. 0 not checked. [2022-10-03 14:34:01,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:34:01,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098078852] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:34:01,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:34:01,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-10-03 14:34:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782997523] [2022-10-03 14:34:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:34:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 14:34:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:34:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 14:34:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-10-03 14:34:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:34:01,289 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:34:01,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 7 states have internal predecessors, (1001), 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 14:34:01,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:34:01,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-03 14:34:01,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:34:01,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:34:01,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-10-03 14:34:01,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 314 states. [2022-10-03 14:34:01,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-10-03 14:34:01,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:36:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-03 14:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 14:36:31,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-03 14:36:32,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:36:32,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:36:32,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:36:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 264588836, now seen corresponding path program 1 times [2022-10-03 14:36:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:36:32,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110080885] [2022-10-03 14:36:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:36:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms