/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.line1422.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:31:08,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:31:08,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:31:08,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:31:08,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:31:08,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:31:08,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:31:08,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:31:08,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:31:08,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:31:08,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:31:08,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:31:08,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:31:08,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:31:08,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:31:08,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:31:08,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:31:08,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:31:08,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:31:08,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:31:08,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:31:08,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:31:08,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:31:08,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:31:08,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:31:08,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:31:08,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:31:08,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:31:08,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:31:08,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:31:08,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:31:08,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:31:08,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:31:08,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:31:08,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:31:08,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:31:08,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:31:08,929 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:31:08,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:31:08,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:31:08,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:31:08,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:31:08,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:31:08,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:31:08,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:31:08,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:31:08,932 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:31:08,933 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:31:08,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:31:08,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:31:09,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:31:09,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:31:09,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:31:09,113 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:31:09,114 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:31:09,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1422.bpl [2022-10-03 15:31:09,115 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line1422.bpl' [2022-10-03 15:31:09,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:31:09,180 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:31:09,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:31:09,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:31:09,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:31:09,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:31:09,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:31:09,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:31:09,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:31:09,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/1) ... [2022-10-03 15:31:09,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:31:09,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:31:09,344 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 15:31:09,346 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 15:31:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:31:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:31:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:31:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:31:09,372 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 15:31:09,540 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:31:09,541 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:31:10,366 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:31:10,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:31:10,394 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:31:10,397 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:31:10 BoogieIcfgContainer [2022-10-03 15:31:10,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:31:10,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:31:10,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:31:10,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:31:10,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:31:09" (1/2) ... [2022-10-03 15:31:10,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f12ba31 and model type divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:31:10, skipping insertion in model container [2022-10-03 15:31:10,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line1422.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:31:10" (2/2) ... [2022-10-03 15:31:10,403 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line1422.bpl [2022-10-03 15:31:10,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:31:10,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:31:10,413 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:31:10,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:31:10,569 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:31:10,627 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:31:10,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:31:10,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:31:10,629 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 15:31:10,646 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 15:31:10,662 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:31:10,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:31:10,671 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;@3d8c6c0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:31:10,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:31:10,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:31:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:31:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 659997924, now seen corresponding path program 1 times [2022-10-03 15:31:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:31:10,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927591143] [2022-10-03 15:31:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:31:10,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:31:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:31:11,454 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 15:31:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:31:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927591143] [2022-10-03 15:31:11,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927591143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:31:11,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:31:11,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:31:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291730824] [2022-10-03 15:31:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:31:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:31:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:31:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:31:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:31:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:11,485 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:31:11,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 303.0) internal successors, (606), 2 states have internal predecessors, (606), 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 15:31:11,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:31:11,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:31:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:31:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -707033995, now seen corresponding path program 1 times [2022-10-03 15:31:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:31:11,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330522946] [2022-10-03 15:31:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:31:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:31:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:31:12,508 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 15:31:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:31:12,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330522946] [2022-10-03 15:31:12,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330522946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:31:12,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:31:12,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-03 15:31:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543634427] [2022-10-03 15:31:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:31:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-03 15:31:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:31:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-03 15:31:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-10-03 15:31:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:12,512 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:31:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 42.0) internal successors, (672), 17 states have internal predecessors, (672), 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 15:31:12,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:12,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-03 15:31:14,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 15:31:14,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:31:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:31:14,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1021373141, now seen corresponding path program 1 times [2022-10-03 15:31:14,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:31:14,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215308316] [2022-10-03 15:31:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:31:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:31:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:31:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 15:31:14,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:31:14,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215308316] [2022-10-03 15:31:14,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215308316] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 15:31:14,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749766712] [2022-10-03 15:31:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:31:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 15:31:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:31:14,919 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 15:31:14,920 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 15:31:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:31:15,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 163 conjunts are in the unsatisfiable core [2022-10-03 15:31:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 15:31:16,175 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 15:31:16,177 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 15:31:17,244 INFO L356 Elim1Store]: treesize reduction 96, result has 13.5 percent of original size [2022-10-03 15:31:17,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 57 [2022-10-03 15:31:17,280 INFO L356 Elim1Store]: treesize reduction 44, result has 61.7 percent of original size [2022-10-03 15:31:17,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 90 [2022-10-03 15:31:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:31:19,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 15:31:19,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2022-10-03 15:31:19,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 15:31:19,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-03 15:31:19,466 INFO L356 Elim1Store]: treesize reduction 20, result has 52.4 percent of original size [2022-10-03 15:31:19,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 42 [2022-10-03 15:31:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-03 15:31:19,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 15:31:19,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749766712] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:31:19,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 15:31:19,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [14] total 54 [2022-10-03 15:31:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205755126] [2022-10-03 15:31:19,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:31:19,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-03 15:31:19,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:31:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-03 15:31:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2658, Unknown=0, NotChecked=0, Total=2862 [2022-10-03 15:31:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:19,577 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:31:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 21.27659574468085) internal successors, (1000), 47 states have internal predecessors, (1000), 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 15:31:19,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:31:19,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-10-03 15:31:19,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:32:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-03 15:32:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-10-03 15:32:51,902 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 15:32:52,095 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 15:32:52,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:32:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:32:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1133735258, now seen corresponding path program 1 times [2022-10-03 15:32:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:32:52,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152629180] [2022-10-03 15:32:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:32:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:33:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat