/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.line1126.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:24:49,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:24:49,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:24:49,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:24:49,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:24:49,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:24:49,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:24:49,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:24:49,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:24:49,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:24:49,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:24:49,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:24:49,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:24:49,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:24:49,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:24:49,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:24:49,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:24:49,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:24:49,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:24:49,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:24:49,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:24:49,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:24:49,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:24:49,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:24:49,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 14:24:49,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:24:49,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:24:49,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:24:49,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:24:49,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:24:49,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:24:49,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:24:49,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:24:49,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:24:49,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:24:49,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:24:49,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:24:49,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:24:49,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:24:49,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:24:49,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:24:49,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:24:49,165 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:24:49,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:24:49,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:24:49,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:24:49,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:24:49,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:24:49,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:24:49,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:24:49,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:24:49,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:24:49,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:24:49,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:24:49,167 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:24:49,168 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:24:49,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:24:49,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:24:49,168 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:24:49,169 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:24:49,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:24:49,169 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:24:49,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:24:49,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:24:49,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:24:49,419 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:24:49,422 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:24:49,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1126.bpl [2022-10-03 14:24:49,423 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo-bug_1w1r.line1126.bpl' [2022-10-03 14:24:49,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:24:49,509 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:24:49,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:24:49,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:24:49,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:24:49,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:24:49,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:24:49,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:24:49,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:24:49,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/1) ... [2022-10-03 14:24:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:24:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:24:49,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-03 14:24:49,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-03 14:24:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 14:24:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 14:24:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:24:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:24:49,751 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:24:49,995 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:24:49,996 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:24:51,142 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:24:51,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:24:51,171 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 14:24:51,174 INFO L202 PluginConnector]: Adding new model divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:51 BoogieIcfgContainer [2022-10-03 14:24:51,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:24:51,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:24:51,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:24:51,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:24:51,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:24:49" (1/2) ... [2022-10-03 14:24:51,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a02f196 and model type divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:51, skipping insertion in model container [2022-10-03 14:24:51,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo-bug_1w1r.line1126.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:51" (2/2) ... [2022-10-03 14:24:51,184 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.line1126.bpl [2022-10-03 14:24:51,190 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:24:51,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:24:51,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:24:51,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:24:51,353 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 14:24:51,428 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:24:51,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:24:51,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:24:51,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:24:51,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:24:51,484 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:24:51,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:24:51,497 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;@1a7df053, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:24:51,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:24:51,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:24:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:24:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -877011130, now seen corresponding path program 1 times [2022-10-03 14:24:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:24:51,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835015609] [2022-10-03 14:24:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:24:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:24:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:24:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:24:52,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:24:52,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835015609] [2022-10-03 14:24:52,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835015609] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:24:52,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:24:52,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 14:24:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603904226] [2022-10-03 14:24:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:24:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 14:24:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:24:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 14:24:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 14:24:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:52,238 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:24:52,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:24:52,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:24:52,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:24:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:24:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 148609459, now seen corresponding path program 1 times [2022-10-03 14:24:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:24:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768724489] [2022-10-03 14:24:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:24:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:24:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:24:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:24:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:24:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768724489] [2022-10-03 14:24:53,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768724489] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:24:53,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:24:53,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-10-03 14:24:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656891405] [2022-10-03 14:24:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:24:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-03 14:24:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:24:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-03 14:24:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-03 14:24:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:53,345 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:24:53,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 31.142857142857142) internal successors, (436), 15 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:24:53,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:24:53,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-03 14:25:01,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 14:25:01,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:25:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:25:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 788290560, now seen corresponding path program 1 times [2022-10-03 14:25:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:25:01,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288282656] [2022-10-03 14:25:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:25:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:25:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:25:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 55805 backedges. 0 proven. 717 refuted. 0 times theorem prover too weak. 55088 trivial. 0 not checked. [2022-10-03 14:25:17,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:25:17,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288282656] [2022-10-03 14:25:17,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288282656] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 14:25:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855286541] [2022-10-03 14:25:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:25:17,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:25:17,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:25:17,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:25:17,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-03 14:25:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:25:21,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 19088 conjuncts, 110 conjunts are in the unsatisfiable core [2022-10-03 14:25:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:25:43,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:25:43,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:25:44,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2022-10-03 14:25:44,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:25:44,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2022-10-03 14:25:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55805 backedges. 7105 proven. 35382 refuted. 0 times theorem prover too weak. 13318 trivial. 0 not checked. [2022-10-03 14:25:44,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:25:45,609 INFO L356 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-10-03 14:25:45,609 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 208 treesize of output 201 [2022-10-03 14:25:45,666 INFO L356 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-10-03 14:25:45,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 240 treesize of output 226 [2022-10-03 14:25:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 55805 backedges. 29536 proven. 384 refuted. 0 times theorem prover too weak. 25885 trivial. 0 not checked. [2022-10-03 14:25:52,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855286541] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:25:52,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 14:25:52,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 35, 24] total 62 [2022-10-03 14:25:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678498457] [2022-10-03 14:25:52,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 14:25:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-03 14:25:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:25:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-03 14:25:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3563, Unknown=0, NotChecked=0, Total=3782 [2022-10-03 14:25:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:52,283 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:25:52,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 93.12903225806451) internal successors, (5774), 62 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-03 14:25:52,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:25:52,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2022-10-03 14:25:52,287 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:27:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:27:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 14:27:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 557 states. [2022-10-03 14:27:46,441 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 14:27:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-03 14:27:46,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:27:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:27:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2130816008, now seen corresponding path program 1 times [2022-10-03 14:27:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:27:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60265526] [2022-10-03 14:27:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:27:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:28:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat