/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.line897.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-29 23:05:27,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 23:05:27,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 23:05:27,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 23:05:27,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 23:05:27,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 23:05:27,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 23:05:27,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 23:05:27,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 23:05:27,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 23:05:27,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 23:05:27,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-09-29 23:05:27,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-29 23:05:28,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 23:05:28,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 23:05:28,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 23:05:28,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 23:05:28,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-29 23:05:28,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-29 23:05:28,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 23:05:28,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 23:05:28,014 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 23:05:28,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 23:05:28,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 23:05:28,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-29 23:05:28,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 23:05:28,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-29 23:05:28,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-29 23:05:28,018 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-29 23:05:28,019 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-29 23:05:28,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-29 23:05:28,019 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 23:05:28,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 23:05:28,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 23:05:28,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 23:05:28,236 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 23:05:28,236 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 23:05:28,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line897.bpl [2022-09-29 23:05:28,237 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/divinefifo_1w1r.line897.bpl' [2022-09-29 23:05:28,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 23:05:28,323 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-29 23:05:28,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 23:05:28,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 23:05:28,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 23:05:28,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 23:05:28,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 23:05:28,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 23:05:28,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 23:05:28,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/1) ... [2022-09-29 23:05:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-29 23:05:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 23:05:28,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-29 23:05:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-29 23:05:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-09-29 23:05:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-09-29 23:05:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 23:05:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 23:05:28,495 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 23:05:28,693 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 23:05:28,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 23:05:29,573 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 23:05:29,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 23:05:29,599 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-29 23:05:29,602 INFO L202 PluginConnector]: Adding new model divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 11:05:29 BoogieIcfgContainer [2022-09-29 23:05:29,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 23:05:29,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-29 23:05:29,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-29 23:05:29,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-29 23:05:29,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 11:05:28" (1/2) ... [2022-09-29 23:05:29,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62253fe3 and model type divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 11:05:29, skipping insertion in model container [2022-09-29 23:05:29,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "divinefifo_1w1r.line897.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 11:05:29" (2/2) ... [2022-09-29 23:05:29,616 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.line897.bpl [2022-09-29 23:05:29,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-29 23:05:29,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-29 23:05:29,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-29 23:05:29,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-29 23:05:29,750 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-29 23:05:29,805 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-29 23:05:29,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-29 23:05:29,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 23:05:29,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-29 23:05:29,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-09-29 23:05:29,843 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-29 23:05:29,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-29 23:05:29,853 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;@386c38e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-29 23:05:29,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-29 23:05:35,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 23:05:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 23:05:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 937758117, now seen corresponding path program 1 times [2022-09-29 23:05:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 23:05:35,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651374479] [2022-09-29 23:05:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 23:05:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 23:05:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 23:05:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 163824 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163824 trivial. 0 not checked. [2022-09-29 23:05:59,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 23:05:59,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651374479] [2022-09-29 23:05:59,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651374479] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 23:05:59,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 23:05:59,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-29 23:05:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854141061] [2022-09-29 23:05:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 23:05:59,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-29 23:05:59,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 23:05:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-29 23:05:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-29 23:05:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:05:59,734 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 23:05:59,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 468.0) internal successors, (936), 2 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 23:05:59,735 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:05:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:05:59,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-29 23:05:59,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 23:05:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 23:05:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1607061399, now seen corresponding path program 1 times [2022-09-29 23:05:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 23:05:59,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639777401] [2022-09-29 23:05:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 23:05:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 23:05:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 23:06:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 23:06:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 23:06:00,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639777401] [2022-09-29 23:06:00,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639777401] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 23:06:00,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 23:06:00,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-29 23:06:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140253451] [2022-09-29 23:06:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 23:06:00,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-29 23:06:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 23:06:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-29 23:06:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-09-29 23:06:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:00,743 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 23:06:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 12.333333333333334) internal successors, (259), 22 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 23:06:00,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:00,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-29 23:06:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-29 23:06:03,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-29 23:06:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 23:06:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1183828416, now seen corresponding path program 1 times [2022-09-29 23:06:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 23:06:03,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084685621] [2022-09-29 23:06:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 23:06:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 23:06:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 23:06:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9805 backedges. 3 proven. 2527 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-09-29 23:06:08,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 23:06:08,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084685621] [2022-09-29 23:06:08,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084685621] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-29 23:06:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770011843] [2022-09-29 23:06:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 23:06:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-29 23:06:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 23:06:08,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-29 23:06:08,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-29 23:06:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 23:06:09,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 7953 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-29 23:06:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 23:06:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-29 23:06:16,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-09-29 23:06:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9805 backedges. 0 proven. 5759 refuted. 0 times theorem prover too weak. 4046 trivial. 0 not checked. [2022-09-29 23:06:22,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-29 23:06:38,006 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-29 23:06:38,007 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 41 treesize of output 45 [2022-09-29 23:06:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9805 backedges. 0 proven. 5494 refuted. 0 times theorem prover too weak. 4311 trivial. 0 not checked. [2022-09-29 23:06:39,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770011843] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-29 23:06:39,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-29 23:06:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27, 18] total 59 [2022-09-29 23:06:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264907932] [2022-09-29 23:06:39,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-29 23:06:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-09-29 23:06:39,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 23:06:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-09-29 23:06:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=3331, Unknown=0, NotChecked=0, Total=3540 [2022-09-29 23:06:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:39,545 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-29 23:06:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 71.86440677966101) internal successors, (4240), 60 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 23:06:39,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-29 23:06:39,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2022-09-29 23:06:39,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.