/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.line1286.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:21:35,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:21:35,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:21:35,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:21:35,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:21:35,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:21:35,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:21:35,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:21:35,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:21:35,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:21:35,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:21:35,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:21:35,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:21:35,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:21:35,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:21:35,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:21:35,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:21:35,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:21:35,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:21:35,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:21:35,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:21:35,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:21:35,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:21:35,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:21:35,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:21:35,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:21:35,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:21:35,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:21:35,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:21:35,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:21:35,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:21:35,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:21:35,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:21:35,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:21:35,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:21:35,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:21:35,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:21:35,193 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:21:35,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:21:35,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:21:35,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:21:35,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:21:35,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:21:35,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:21:35,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:21:35,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:21:35,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:21:35,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:21:35,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:21:35,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:21:35,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:21:35,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:21:35,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:21:35,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:21:35,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:21:35,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:21:35,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:21:35,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:21:35,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:21:35,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:21:35,447 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:21:35,448 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:21:35,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1286.bpl [2022-10-03 15:21:35,450 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1286.bpl' [2022-10-03 15:21:35,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:21:35,534 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:21:35,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:21:35,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:21:35,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:21:35,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:21:35,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:21:35,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:21:35,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:21:35,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/1) ... [2022-10-03 15:21:35,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:21:35,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:21:35,761 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 15:21:35,769 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 15:21:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:21:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:21:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:21:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:21:35,805 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 15:21:35,948 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:21:35,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:21:37,032 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:21:37,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:21:37,052 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:21:37,055 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:21:37 BoogieIcfgContainer [2022-10-03 15:21:37,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:21:37,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:21:37,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:21:37,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:21:37,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:21:35" (1/2) ... [2022-10-03 15:21:37,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1756cecb and model type divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:21:37, skipping insertion in model container [2022-10-03 15:21:37,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1286.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:21:37" (2/2) ... [2022-10-03 15:21:37,066 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1286.bpl [2022-10-03 15:21:37,074 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:21:37,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:21:37,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:21:37,085 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:21:37,267 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:21:37,357 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:21:37,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:21:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:21:37,367 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 15:21:37,393 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 15:21:37,408 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:21:37,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:21:37,421 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;@74536304, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:21:37,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:21:37,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:21:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:21:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 797380289, now seen corresponding path program 1 times [2022-10-03 15:21:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:21:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658017527] [2022-10-03 15:21:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:21:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:21:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:21:38,376 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 15:21:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:21:38,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658017527] [2022-10-03 15:21:38,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658017527] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:21:38,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:21:38,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:21:38,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781770592] [2022-10-03 15:21:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:21:38,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:21:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:21:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:21:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:21:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:38,421 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:21:38,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 247.5) internal successors, (495), 2 states have internal predecessors, (495), 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 15:21:38,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:21:38,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:21:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:21:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1282980387, now seen corresponding path program 1 times [2022-10-03 15:21:38,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:21:38,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450943719] [2022-10-03 15:21:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:21:38,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:21:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:21:39,401 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 15:21:39,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:21:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450943719] [2022-10-03 15:21:39,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450943719] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:21:39,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:21:39,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-10-03 15:21:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357517618] [2022-10-03 15:21:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:21:39,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-03 15:21:39,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:21:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-03 15:21:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-10-03 15:21:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:39,407 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:21:39,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 33.05882352941177) internal successors, (562), 18 states have internal predecessors, (562), 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 15:21:39,408 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:39,408 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:21:42,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:21:42,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:21:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:21:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1212272850, now seen corresponding path program 1 times [2022-10-03 15:21:42,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:21:42,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93349430] [2022-10-03 15:21:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:21:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:21:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:21:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-03 15:21:42,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:21:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93349430] [2022-10-03 15:21:42,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93349430] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:21:42,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:21:42,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-03 15:21:42,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345976949] [2022-10-03 15:21:42,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:21:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-03 15:21:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:21:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-03 15:21:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-03 15:21:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:42,800 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:21:42,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 74.9090909090909) internal successors, (824), 12 states have internal predecessors, (824), 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 15:21:42,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:42,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:21:42,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:21:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:21:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-03 15:21:47,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-03 15:21:47,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:21:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:21:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash 320389670, now seen corresponding path program 1 times [2022-10-03 15:21:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:21:47,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849793210] [2022-10-03 15:21:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:21:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:21:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:22:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 61348 backedges. 17120 proven. 778 refuted. 0 times theorem prover too weak. 43450 trivial. 0 not checked. [2022-10-03 15:22:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:22:15,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849793210] [2022-10-03 15:22:15,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849793210] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:22:15,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380632906] [2022-10-03 15:22:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:22:15,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:22:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:22:15,253 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 15:22:15,258 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 15:22:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:22:18,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 17451 conjuncts, 198 conjunts are in the unsatisfiable core [2022-10-03 15:22:18,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:22:20,873 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 6 treesize of output 5 [2022-10-03 15:22:20,877 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 6 treesize of output 5 [2022-10-03 15:22:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:22:25,193 INFO L356 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-10-03 15:22:25,194 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 86 treesize of output 59 [2022-10-03 15:22:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:22:25,237 INFO L356 Elim1Store]: treesize reduction 48, result has 61.6 percent of original size [2022-10-03 15:22:25,238 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 51 treesize of output 96 [2022-10-03 15:22:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 61348 backedges. 22167 proven. 0 refuted. 0 times theorem prover too weak. 39181 trivial. 0 not checked. [2022-10-03 15:22:30,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:22:30,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380632906] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:22:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:22:30,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [99] total 148 [2022-10-03 15:22:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853527657] [2022-10-03 15:22:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:22:30,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-03 15:22:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:22:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-03 15:22:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=21215, Unknown=0, NotChecked=0, Total=21756 [2022-10-03 15:22:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:30,426 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:22:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 29.07843137254902) internal successors, (1483), 51 states have internal predecessors, (1483), 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 15:22:30,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:22:30,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-03 15:22:30,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-03 15:22:30,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.