/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1861.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-29 22:09:53,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 22:09:53,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 22:09:53,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 22:09:53,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 22:09:53,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 22:09:53,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 22:09:53,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 22:09:53,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 22:09:53,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 22:09:53,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 22:09:53,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-29 22:09:53,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-29 22:09:53,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-29 22:09:53,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-29 22:09:53,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-29 22:09:53,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-29 22:09:53,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-29 22:09:53,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-29 22:09:53,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-29 22:09:53,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-29 22:09:53,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-29 22:09:53,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-29 22:09:53,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-29 22:09:53,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-29 22:09:53,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 22:09:53,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 22:09:53,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 22:09:53,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-29 22:09:53,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 22:09:53,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 22:09:53,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 22:09:53,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 22:09:53,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-29 22:09:53,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-29 22:09:53,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 22:09:53,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 22:09:53,957 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 22:09:53,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-29 22:09:53,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-29 22:09:53,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 22:09:53,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 22:09:53,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-29 22:09:53,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-29 22:09:53,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:09:53,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 22:09:53,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-29 22:09:53,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-29 22:09:53,961 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 22:09:54,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 22:09:54,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 22:09:54,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 22:09:54,152 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 22:09:54,153 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 22:09:54,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1861.bpl [2022-09-29 22:09:54,155 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1861.bpl' [2022-09-29 22:09:54,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 22:09:54,218 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-29 22:09:54,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 22:09:54,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 22:09:54,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 22:09:54,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 22:09:54,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 22:09:54,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 22:09:54,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 22:09:54,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/1) ... [2022-09-29 22:09:54,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 22:09:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:09:54,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-29 22:09:54,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-29 22:09:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-09-29 22:09:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-09-29 22:09:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 22:09:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 22:09:54,486 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 22:09:54,647 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 22:09:54,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 22:09:55,483 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 22:09:55,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 22:09:55,497 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-29 22:09:55,500 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:09:55 BoogieIcfgContainer [2022-09-29 22:09:55,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 22:09:55,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-29 22:09:55,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-29 22:09:55,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-29 22:09:55,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:09:54" (1/2) ... [2022-09-29 22:09:55,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b20f4cc and model type divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:09:55, skipping insertion in model container [2022-09-29 22:09:55,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1861.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:09:55" (2/2) ... [2022-09-29 22:09:55,507 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1861.bpl [2022-09-29 22:09:55,512 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-29 22:09:55,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-29 22:09:55,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-29 22:09:55,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-29 22:09:55,623 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-29 22:09:55,674 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-29 22:09:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-29 22:09:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:09:55,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-29 22:09:55,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-09-29 22:09:55,716 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-29 22:09:55,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-29 22:09:55,725 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;@32da1543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-29 22:09:55,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-29 22:09:55,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:09:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:09:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1943787107, now seen corresponding path program 1 times [2022-09-29 22:09:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:09:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896794535] [2022-09-29 22:09:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:09:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:09:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:09:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:09:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:09:56,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896794535] [2022-09-29 22:09:56,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896794535] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:09:56,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:09:56,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-29 22:09:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484876039] [2022-09-29 22:09:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:09:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-29 22:09:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:09:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-29 22:09:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-29 22:09:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:56,326 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:09:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 22:09:56,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-29 22:09:56,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:09:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:09:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1801475696, now seen corresponding path program 1 times [2022-09-29 22:09:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:09:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32241639] [2022-09-29 22:09:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:09:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:09:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:09:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 22:09:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:09:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32241639] [2022-09-29 22:09:56,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32241639] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:09:56,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 22:09:56,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-29 22:09:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26714572] [2022-09-29 22:09:56,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:09:56,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-29 22:09:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:09:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-29 22:09:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-29 22:09:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:56,726 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:09:56,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 22:09:56,727 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:56,727 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:09:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:09:57,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-29 22:09:57,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:09:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:09:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1524497632, now seen corresponding path program 1 times [2022-09-29 22:09:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:09:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001487955] [2022-09-29 22:09:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:09:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:09:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001487955] [2022-09-29 22:10:01,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001487955] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:10:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735120362] [2022-09-29 22:10:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:01,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:10:01,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:01,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-29 22:10:01,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-29 22:10:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:02,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 8840 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-29 22:10:02,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:10:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:05,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 22:10:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10550 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10548 trivial. 0 not checked. [2022-09-29 22:10:08,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735120362] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 22:10:08,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 22:10:08,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-29 22:10:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133172100] [2022-09-29 22:10:08,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 22:10:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-29 22:10:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:10:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-29 22:10:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-29 22:10:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:08,244 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:10:08,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 371.57142857142856) internal successors, (2601), 7 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 22:10:08,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:08,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:08,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:10:11,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-29 22:10:11,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-29 22:10:11,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash -803618148, now seen corresponding path program 2 times [2022-09-29 22:10:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:11,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507785045] [2022-09-29 22:10:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 22:10:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 42354 proven. 294 refuted. 0 times theorem prover too weak. 86657 trivial. 0 not checked. [2022-09-29 22:10:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 22:10:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507785045] [2022-09-29 22:10:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507785045] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 22:10:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984762656] [2022-09-29 22:10:38,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-29 22:10:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:10:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 22:10:38,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-29 22:10:38,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-29 22:10:39,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-29 22:10:39,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-29 22:10:39,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-29 22:10:39,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 22:10:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 129305 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 129031 trivial. 0 not checked. [2022-09-29 22:10:40,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-29 22:10:40,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984762656] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 22:10:40,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-29 22:10:40,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 11 [2022-09-29 22:10:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335932724] [2022-09-29 22:10:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 22:10:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-29 22:10:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 22:10:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-29 22:10:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-29 22:10:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:40,671 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 22:10:40,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 157.375) internal successors, (1259), 9 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 22:10:40,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:40,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:40,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:10:40,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 22:10:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 22:10:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-29 22:10:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-29 22:10:50,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-29 22:10:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 22:10:50,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 22:10:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 22:10:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1848662534, now seen corresponding path program 1 times [2022-09-29 22:10:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 22:10:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668868497] [2022-09-29 22:10:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 22:10:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 22:10:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat