/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.line939.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 15:59:08,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 15:59:08,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 15:59:08,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 15:59:08,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 15:59:08,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 15:59:08,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 15:59:08,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 15:59:08,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 15:59:08,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 15:59:08,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 15:59:08,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 15:59:08,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 15:59:08,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 15:59:08,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 15:59:08,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 15:59:08,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 15:59:08,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 15:59:08,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 15:59:08,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 15:59:08,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 15:59:08,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 15:59:08,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 15:59:08,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 15:59:08,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-03 15:59:08,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 15:59:08,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 15:59:08,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 15:59:08,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 15:59:08,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 15:59:08,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 15:59:08,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 15:59:08,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 15:59:08,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 15:59:08,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 15:59:08,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 15:59:08,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 15:59:08,814 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 15:59:08,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 15:59:08,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 15:59:08,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 15:59:08,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 15:59:08,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:59:08,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 15:59:08,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 15:59:08,817 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 15:59:08,818 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 15:59:08,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 15:59:08,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 15:59:09,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 15:59:09,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 15:59:09,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 15:59:09,097 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 15:59:09,098 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 15:59:09,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line939.bpl [2022-10-03 15:59:09,100 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line939.bpl' [2022-10-03 15:59:09,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 15:59:09,187 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 15:59:09,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 15:59:09,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 15:59:09,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 15:59:09,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 15:59:09,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 15:59:09,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 15:59:09,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 15:59:09,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/1) ... [2022-10-03 15:59:09,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 15:59:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:59:09,357 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 15:59:09,377 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 15:59:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-10-03 15:59:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-10-03 15:59:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 15:59:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 15:59:09,417 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 15:59:09,684 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 15:59:09,687 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 15:59:10,834 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 15:59:10,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 15:59:10,888 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-03 15:59:10,893 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:59:10 BoogieIcfgContainer [2022-10-03 15:59:10,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 15:59:10,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 15:59:10,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 15:59:10,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 15:59:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 03:59:09" (1/2) ... [2022-10-03 15:59:10,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469e8c39 and model type divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:59:10, skipping insertion in model container [2022-10-03 15:59:10,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line939.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:59:10" (2/2) ... [2022-10-03 15:59:10,917 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line939.bpl [2022-10-03 15:59:10,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 15:59:10,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 15:59:10,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 15:59:10,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 15:59:11,125 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-03 15:59:11,210 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 15:59:11,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 15:59:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 15:59:11,213 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 15:59:11,215 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 15:59:11,275 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 15:59:11,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-03 15:59:11,299 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;@1c8d6ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 15:59:11,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 15:59:17,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:59:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:59:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1938450630, now seen corresponding path program 1 times [2022-10-03 15:59:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:59:17,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203984720] [2022-10-03 15:59:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:59:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:59:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:59:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 163824 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163824 trivial. 0 not checked. [2022-10-03 15:59:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:59:54,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203984720] [2022-10-03 15:59:54,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203984720] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:59:54,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:59:54,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-03 15:59:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689233707] [2022-10-03 15:59:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:59:54,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-03 15:59:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:59:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-03 15:59:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-03 15:59:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:59:54,074 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:59:54,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 485.0) internal successors, (970), 2 states have internal predecessors, (970), 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 15:59:54,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:59:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:59:54,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 15:59:54,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 15:59:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 15:59:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash 823640570, now seen corresponding path program 1 times [2022-10-03 15:59:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 15:59:54,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231835054] [2022-10-03 15:59:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 15:59:54,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 15:59:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 15:59:56,412 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 15:59:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 15:59:56,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231835054] [2022-10-03 15:59:56,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231835054] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 15:59:56,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 15:59:56,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-10-03 15:59:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523670927] [2022-10-03 15:59:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 15:59:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-03 15:59:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 15:59:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-03 15:59:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2017, Unknown=0, NotChecked=0, Total=2162 [2022-10-03 15:59:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:59:56,421 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 15:59:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 6.369565217391305) internal successors, (293), 47 states have internal predecessors, (293), 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 15:59:56,422 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 15:59:56,422 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:00:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:00:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:00:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-03 16:00:08,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 16:00:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 16:00:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1938713315, now seen corresponding path program 1 times [2022-10-03 16:00:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 16:00:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093438806] [2022-10-03 16:00:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:00:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 16:00:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:00:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9839 backedges. 3933 proven. 4945 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-10-03 16:00:14,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 16:00:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093438806] [2022-10-03 16:00:14,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093438806] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 16:00:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361203604] [2022-10-03 16:00:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:00:14,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 16:00:14,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 16:00:14,259 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 16:00:14,261 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 16:00:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:00:16,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 8039 conjuncts, 92 conjunts are in the unsatisfiable core [2022-10-03 16:00:16,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 16:00:24,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-10-03 16:00:25,749 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-10-03 16:00:25,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-10-03 16:00:26,246 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-10-03 16:00:26,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-10-03 16:00:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9839 backedges. 3949 proven. 4107 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2022-10-03 16:00:26,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 16:00:26,726 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1403 (Array Int Int))) (not (= |c_#memory_$Pointer$.base| (store |c_pusherThread1of1ForFork0_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_pusherThread1of1ForFork0_write~$Pointer$_#ptr#1.base| v_ArrVal_1403)))) is different from false [2022-10-03 16:00:27,114 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1403 (Array Int Int)) (|ULTIMATE.start_ULTIMATE.dealloc_~addr#1.base| Int)) (not (= (select (store |c_ULTIMATE.start_ULTIMATE.dealloc_old_#valid#1| |ULTIMATE.start_ULTIMATE.dealloc_~addr#1.base| 0) (select (select (store |c_pusherThread1of1ForFork0_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_pusherThread1of1ForFork0_write~$Pointer$_#ptr#1.base| v_ArrVal_1403) |c_ULTIMATE.start_fifo_pop_~self#1.base|) |c_ULTIMATE.start_fifo_pop_~self#1.offset|)) 1))) is different from false [2022-10-03 16:00:27,126 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1403 (Array Int Int)) (|ULTIMATE.start_ULTIMATE.dealloc_~addr#1.base| Int)) (not (= (select (store |c_#valid| |ULTIMATE.start_ULTIMATE.dealloc_~addr#1.base| 0) (select (select (store |c_pusherThread1of1ForFork0_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_pusherThread1of1ForFork0_write~$Pointer$_#ptr#1.base| v_ArrVal_1403) |c_ULTIMATE.start_fifo_pop_~self#1.base|) |c_ULTIMATE.start_fifo_pop_~self#1.offset|)) 1))) is different from false [2022-10-03 16:00:27,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-10-03 16:00:27,673 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1403 (Array Int Int))) (= |c_ULTIMATE.start_ULTIMATE.dealloc_~addr#1.base| (select (select (store |c_pusherThread1of1ForFork0_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_pusherThread1of1ForFork0_write~$Pointer$_#ptr#1.base| v_ArrVal_1403) |c_ULTIMATE.start_fifo_pop_~self#1.base|) |c_ULTIMATE.start_fifo_pop_~self#1.offset|))) is different from false [2022-10-03 16:00:27,680 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1403 (Array Int Int))) (= (select (select (store |c_pusherThread1of1ForFork0_write~$Pointer$_old_#memory_$Pointer$#1.base| |c_pusherThread1of1ForFork0_write~$Pointer$_#ptr#1.base| v_ArrVal_1403) |c_ULTIMATE.start_fifo_pop_~self#1.base|) |c_ULTIMATE.start_fifo_pop_~self#1.offset|) |c_ULTIMATE.start_fifo_drop_head_~old~0#1.base|)) is different from false [2022-10-03 16:00:28,254 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 16:00:28,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-10-03 16:00:28,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-10-03 16:00:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9839 backedges. 3819 proven. 2688 refuted. 0 times theorem prover too weak. 1863 trivial. 1469 not checked. [2022-10-03 16:00:34,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361203604] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 16:00:34,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-03 16:00:34,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 37, 29] total 114 [2022-10-03 16:00:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951634613] [2022-10-03 16:00:34,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-03 16:00:34,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-10-03 16:00:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 16:00:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-10-03 16:00:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=11272, Unknown=14, NotChecked=1090, Total=12882 [2022-10-03 16:00:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:00:34,670 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 16:00:34,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 46.49122807017544) internal successors, (5300), 114 states have internal predecessors, (5300), 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 16:00:34,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:00:34,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:00:34,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:01:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-10-03 16:01:09,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-03 16:01:09,464 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 16:01:09,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 16:01:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 16:01:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1247407, now seen corresponding path program 1 times [2022-10-03 16:01:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 16:01:09,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862092511] [2022-10-03 16:01:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:01:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 16:01:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:01:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28930 backedges. 15919 proven. 0 refuted. 0 times theorem prover too weak. 13011 trivial. 0 not checked. [2022-10-03 16:01:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 16:01:16,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862092511] [2022-10-03 16:01:16,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862092511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 16:01:16,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 16:01:16,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-10-03 16:01:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122682687] [2022-10-03 16:01:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 16:01:16,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-03 16:01:16,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 16:01:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-03 16:01:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-10-03 16:01:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:16,826 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 16:01:16,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 73.52380952380952) internal successors, (1544), 21 states have internal predecessors, (1544), 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 16:01:16,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:16,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:01:16,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 209 states. [2022-10-03 16:01:16,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:01:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-10-03 16:01:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:01:19,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-03 16:01:19,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 16:01:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 16:01:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1687461681, now seen corresponding path program 2 times [2022-10-03 16:01:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 16:01:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445828638] [2022-10-03 16:01:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:01:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 16:01:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:01:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12977 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 12918 trivial. 0 not checked. [2022-10-03 16:01:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 16:01:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445828638] [2022-10-03 16:01:28,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445828638] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 16:01:28,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 16:01:28,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-10-03 16:01:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620439733] [2022-10-03 16:01:28,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 16:01:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-10-03 16:01:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 16:01:28,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-10-03 16:01:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=4340, Unknown=0, NotChecked=0, Total=4556 [2022-10-03 16:01:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:28,125 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 16:01:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 15.147058823529411) internal successors, (1030), 68 states have internal predecessors, (1030), 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 16:01:28,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:01:28,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:01:28,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 209 states. [2022-10-03 16:01:28,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:01:28,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:02:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2022-10-03 16:02:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:02:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-10-03 16:02:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-03 16:02:15,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 16:02:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 16:02:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1610215677, now seen corresponding path program 3 times [2022-10-03 16:02:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 16:02:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814317102] [2022-10-03 16:02:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:02:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 16:02:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:02:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 31060 backedges. 17719 proven. 167 refuted. 0 times theorem prover too weak. 13174 trivial. 0 not checked. [2022-10-03 16:02:24,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 16:02:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814317102] [2022-10-03 16:02:24,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814317102] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-03 16:02:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331239887] [2022-10-03 16:02:24,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-03 16:02:24,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 16:02:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 16:02:24,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 16:02:24,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-03 16:02:25,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-03 16:02:25,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 16:02:25,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 200 conjunts are in the unsatisfiable core [2022-10-03 16:02:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 16:02:25,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-03 16:02:26,162 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-03 16:02:26,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-10-03 16:02:26,883 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 16:02:27,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:27,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-03 16:02:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:27,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-03 16:02:27,711 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 16:02:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:27,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-03 16:02:29,359 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 16:02:29,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-03 16:02:29,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-10-03 16:02:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:29,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-10-03 16:02:31,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-10-03 16:02:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-03 16:02:32,166 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-03 16:02:32,167 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2022-10-03 16:02:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 31060 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31001 trivial. 0 not checked. [2022-10-03 16:02:32,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 16:02:32,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331239887] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 16:02:32,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 16:02:32,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [31] total 88 [2022-10-03 16:02:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653325949] [2022-10-03 16:02:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 16:02:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-10-03 16:02:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 16:02:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-10-03 16:02:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=7361, Unknown=0, NotChecked=0, Total=7656 [2022-10-03 16:02:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:32,350 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 16:02:32,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 17.45762711864407) internal successors, (1030), 59 states have internal predecessors, (1030), 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 16:02:32,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:32,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 68 states. [2022-10-03 16:02:32,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 434 states. [2022-10-03 16:02:32,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:02:32,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 104 states. [2022-10-03 16:02:32,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-10-03 16:02:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2022-10-03 16:02:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:02:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-10-03 16:02:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-10-03 16:02:45,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-03 16:02:46,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 16:02:46,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-03 16:02:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 16:02:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash 350878068, now seen corresponding path program 1 times [2022-10-03 16:02:46,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 16:02:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132844498] [2022-10-03 16:02:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 16:02:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 16:02:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 16:02:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20284 backedges. 2233 proven. 0 refuted. 0 times theorem prover too weak. 18051 trivial. 0 not checked. [2022-10-03 16:02:56,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 16:02:56,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132844498] [2022-10-03 16:02:56,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132844498] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 16:02:56,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 16:02:56,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-10-03 16:02:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195824500] [2022-10-03 16:02:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 16:02:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-10-03 16:02:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 16:02:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-10-03 16:02:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=10383, Unknown=0, NotChecked=0, Total=10712 [2022-10-03 16:02:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:56,422 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 16:02:56,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 11.307692307692308) internal successors, (1176), 104 states have internal predecessors, (1176), 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 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 69 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 434 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 107 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 83 states. [2022-10-03 16:02:56,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.