/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_1w1r.line1443.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:31:57,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:31:57,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:31:57,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:31:57,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:31:57,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:31:57,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:31:57,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:31:57,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:31:57,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:31:57,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:31:57,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:31:57,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:31:57,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:31:57,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:31:57,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:31:57,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:31:57,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:31:57,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:31:57,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:31:57,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:31:57,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:31:57,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:31:57,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:31:57,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-03 15:31:57,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-03 15:31:57,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-03 15:31:57,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-03 15:31:57,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-03 15:31:57,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-03 15:31:57,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-03 15:31:57,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-03 15:31:57,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-03 15:31:57,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-03 15:31:57,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-03 15:31:57,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-03 15:31:57,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-03 15:31:57,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-03 15:31:57,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:31:57,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:31:57,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:31:57,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:31:57,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:31:57,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:31:57,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:31:57,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:31:57,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:31:57,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:31:57,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:31:57,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:31:57,846 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:31:57,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:31:57,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:31:57,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:31:57,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:31:57,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:31:57,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:31:57,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:31:57,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:31:57,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:31:57,851 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:31:57,851 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:31:57,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:31:57,851 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:31:58,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:31:58,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:31:58,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:31:58,075 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:31:58,076 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:31:58,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1443.bpl [2022-10-03 15:31:58,078 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1443.bpl' [2022-10-03 15:31:58,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:31:58,137 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:31:58,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:31:58,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:31:58,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:31:58,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:31:58,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:31:58,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:31:58,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:31:58,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/1) ... [2022-10-03 15:31:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:31:58,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:31:58,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 15:31:58,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 15:31:58,345 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:31:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:31:58,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:31:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:31:58,347 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 15:31:58,516 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:31:58,517 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:31:59,398 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:31:59,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:31:59,413 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:31:59,415 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:31:59 BoogieIcfgContainer [2022-10-03 15:31:59,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:31:59,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:31:59,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:31:59,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:31:59,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:58" (1/2) ... [2022-10-03 15:31:59,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c12c7 and model type divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:31:59, skipping insertion in model container [2022-10-03 15:31:59,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1443.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:31:59" (2/2) ... [2022-10-03 15:31:59,436 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1443.bpl [2022-10-03 15:31:59,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:31:59,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:31:59,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:31:59,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:31:59,590 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:31:59,649 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:31:59,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:31:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:31:59,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 15:31:59,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 15:31:59,707 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:31:59,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:31:59,720 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;@46a42aff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:31:59,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:32:00,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -882743684, now seen corresponding path program 1 times [2022-10-03 15:32:00,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:00,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606562913] [2022-10-03 15:32:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:32:00,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:00,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606562913] [2022-10-03 15:32:00,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606562913] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:32:00,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:32:00,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:32:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781346949] [2022-10-03 15:32:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:32:00,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:32:00,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:32:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:32:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:32:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:00,570 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:32:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:32:00,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:00,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:32:00,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:00,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1587145109, now seen corresponding path program 1 times [2022-10-03 15:32:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:00,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62048683] [2022-10-03 15:32:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:00,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 15:32:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:01,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62048683] [2022-10-03 15:32:01,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62048683] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:32:01,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:32:01,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-03 15:32:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104711946] [2022-10-03 15:32:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:32:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-03 15:32:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:32:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-03 15:32:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-10-03 15:32:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:01,556 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:32:01,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 43.0625) internal successors, (689), 17 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:32:01,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:01,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-03 15:32:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:32:03,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash -10870873, now seen corresponding path program 1 times [2022-10-03 15:32:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:03,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165826517] [2022-10-03 15:32:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 143 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 15:32:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165826517] [2022-10-03 15:32:03,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165826517] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:32:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297033715] [2022-10-03 15:32:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:32:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:32:03,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 15:32:03,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 15:32:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:04,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 156 conjunts are in the unsatisfiable core [2022-10-03 15:32:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:32:04,466 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 15:32:04,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:04,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 15:32:05,036 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 15:32:05,036 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 15:32:05,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 15:32:07,208 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-10-03 15:32:07,209 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 21 treesize of output 21 [2022-10-03 15:32:07,775 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-03 15:32:07,776 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2022-10-03 15:32:07,788 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 31 treesize of output 29 [2022-10-03 15:32:08,238 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:32:08,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 13 [2022-10-03 15:32:08,254 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:32:08,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 38 treesize of output 14 [2022-10-03 15:32:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-03 15:32:08,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:32:08,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297033715] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:32:08,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:32:08,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [14] total 70 [2022-10-03 15:32:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498498774] [2022-10-03 15:32:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:32:08,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-03 15:32:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:32:08,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-03 15:32:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=4611, Unknown=0, NotChecked=0, Total=4830 [2022-10-03 15:32:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:08,357 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:32:08,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 17.24561403508772) internal successors, (983), 57 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:32:08,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:08,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-10-03 15:32:08,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-03 15:32:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-10-03 15:32:29,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-03 15:32:29,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-03 15:32:29,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1018237698, now seen corresponding path program 1 times [2022-10-03 15:32:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:29,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067408525] [2022-10-03 15:32:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-10-03 15:32:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:30,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067408525] [2022-10-03 15:32:30,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067408525] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:32:30,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:32:30,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-10-03 15:32:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245619071] [2022-10-03 15:32:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:32:30,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-03 15:32:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:32:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-03 15:32:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-10-03 15:32:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:30,602 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:32:30,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 61.57142857142857) internal successors, (1293), 21 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:32:30,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:30,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-10-03 15:32:30,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 136 states. [2022-10-03 15:32:30,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-03 15:32:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-10-03 15:32:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:32:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-03 15:32:34,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1129222272, now seen corresponding path program 1 times [2022-10-03 15:32:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553410381] [2022-10-03 15:32:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-10-03 15:32:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553410381] [2022-10-03 15:32:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553410381] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:32:35,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582685294] [2022-10-03 15:32:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:35,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:32:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:32:35,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 15:32:35,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-03 15:32:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:35,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 151 conjunts are in the unsatisfiable core [2022-10-03 15:32:35,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:32:35,775 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 15:32:36,144 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 15:32:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:36,350 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 21 treesize of output 20 [2022-10-03 15:32:36,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:36,601 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 15:32:36,779 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 15:32:36,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:36,784 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 15:32:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:37,455 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-10-03 15:32:37,456 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-10-03 15:32:37,727 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 35 treesize of output 33 [2022-10-03 15:32:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:37,734 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 25 treesize of output 30 [2022-10-03 15:32:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-10-03 15:32:40,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:32:40,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582685294] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:32:40,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:32:40,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [14] total 53 [2022-10-03 15:32:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715160459] [2022-10-03 15:32:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:32:40,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-10-03 15:32:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:32:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-10-03 15:32:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2571, Unknown=0, NotChecked=0, Total=2756 [2022-10-03 15:32:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:40,197 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:32:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 23.634146341463413) internal successors, (969), 41 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:32:40,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:40,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-10-03 15:32:40,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 142 states. [2022-10-03 15:32:40,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:32:40,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-03 15:32:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-10-03 15:32:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:32:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-03 15:32:51,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-03 15:32:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:32:52,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1718994671, now seen corresponding path program 1 times [2022-10-03 15:32:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:52,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66047748] [2022-10-03 15:32:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:32:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-10-03 15:32:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:32:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66047748] [2022-10-03 15:32:52,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66047748] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:32:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499758385] [2022-10-03 15:32:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:32:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:32:52,842 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 15:32:52,863 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 15:32:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:32:53,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3728 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-03 15:32:53,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:32:53,533 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 15:32:53,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:53,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 15:32:54,210 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 15:32:54,210 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 15:32:54,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 15:32:59,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:32:59,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 15:32:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 179 proven. 465 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2022-10-03 15:32:59,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 15:33:25,986 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 15:33:30,697 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 15:33:30,698 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 42 treesize of output 60 [2022-10-03 15:34:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-10-03 15:34:08,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499758385] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 15:34:08,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 15:34:08,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 22] total 59 [2022-10-03 15:34:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120218851] [2022-10-03 15:34:08,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 15:34:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-10-03 15:34:08,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:34:08,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-10-03 15:34:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=3314, Unknown=13, NotChecked=0, Total=3540 [2022-10-03 15:34:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:34:08,623 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:34:08,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 48.6271186440678) internal successors, (2869), 60 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 183 states. [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2022-10-03 15:34:08,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:34:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:34:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-03 15:34:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-10-03 15:34:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 15:34:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-03 15:34:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-10-03 15:34:44,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-03 15:34:44,730 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 15:34:44,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:34:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:34:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -511057016, now seen corresponding path program 1 times [2022-10-03 15:34:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:34:44,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230782187] [2022-10-03 15:34:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:34:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:36:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat