/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-22 14:03:36,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-22 14:03:36,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-22 14:03:36,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-22 14:03:36,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf [2021-10-22 14:03:36,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-22 14:03:36,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-22 14:03:36,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-22 14:03:36,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-22 14:03:36,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-22 14:03:36,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-22 14:03:36,854 INFO L138 SettingsManager]: * Use SBE=true [2021-10-22 14:03:36,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-22 14:03:36,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-22 14:03:36,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-22 14:03:36,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-22 14:03:36,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-22 14:03:36,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-22 14:03:36,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-22 14:03:36,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-22 14:03:36,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 14:03:36,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-22 14:03:36,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-22 14:03:36,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-22 14:03:36,858 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-22 14:03:36,858 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-22 14:03:36,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-22 14:03:36,858 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-22 14:03:37,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-22 14:03:37,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-22 14:03:37,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-22 14:03:37,058 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-22 14:03:37,059 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-22 14:03:37,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq.wvr.bpl [2021-10-22 14:03:37,060 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/inc-subseq.wvr.bpl' [2021-10-22 14:03:37,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-22 14:03:37,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-22 14:03:37,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-22 14:03:37,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-22 14:03:37,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-22 14:03:37,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-22 14:03:37,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-22 14:03:37,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-22 14:03:37,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-22 14:03:37,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-22 14:03:37,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-22 14:03:37,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-22 14:03:37,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-22 14:03:37,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/1) ... [2021-10-22 14:03:37,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 14:03:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:37,142 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) [2021-10-22 14:03:37,143 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 [2021-10-22 14:03:37,169 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-10-22 14:03:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-22 14:03:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-22 14:03:37,170 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-10-22 14:03:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-22 14:03:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-22 14:03:37,170 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-22 14:03:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-22 14:03:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-22 14:03:37,171 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-22 14:03:37,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-22 14:03:37,306 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-22 14:03:37,307 INFO L202 PluginConnector]: Adding new model inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:03:37 BoogieIcfgContainer [2021-10-22 14:03:37,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-22 14:03:37,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-22 14:03:37,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-22 14:03:37,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-22 14:03:37,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:03:37" (1/2) ... [2021-10-22 14:03:37,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9dd877 and model type inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:03:37, skipping insertion in model container [2021-10-22 14:03:37,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "inc-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:03:37" (2/2) ... [2021-10-22 14:03:37,313 INFO L111 eAbstractionObserver]: Analyzing ICFG inc-subseq.wvr.bpl [2021-10-22 14:03:37,316 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-22 14:03:37,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-22 14:03:37,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-22 14:03:37,316 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-22 14:03:37,335 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-22 14:03:37,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-22 14:03:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:37,386 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) [2021-10-22 14:03:37,387 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 [2021-10-22 14:03:37,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-22 14:03:37,416 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-22 14:03:37,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-22 14:03:37,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:37,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:37,521 INFO L82 PathProgramCache]: Analyzing trace with hash -650595365, now seen corresponding path program 1 times [2021-10-22 14:03:37,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:37,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605303975] [2021-10-22 14:03:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:37,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:03:37,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:37,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605303975] [2021-10-22 14:03:37,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605303975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:37,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583379800] [2021-10-22 14:03:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:37,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:37,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:37,668 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) [2021-10-22 14:03:37,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-22 14:03:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:37,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-22 14:03:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:03:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 14:03:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583379800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:03:37,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-22 14:03:37,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2021-10-22 14:03:37,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047414273] [2021-10-22 14:03:37,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-22 14:03:37,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-22 14:03:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-22 14:03:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:37,902 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:37,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-22 14:03:37,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:37,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-22 14:03:38,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-22 14:03:38,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:38,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:38,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1727270944, now seen corresponding path program 2 times [2021-10-22 14:03:38,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:38,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378982620] [2021-10-22 14:03:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:38,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:03:38,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378982620] [2021-10-22 14:03:38,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378982620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832193584] [2021-10-22 14:03:38,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-22 14:03:38,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:38,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:38,325 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) [2021-10-22 14:03:38,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-22 14:03:38,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-22 14:03:38,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:03:38,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-22 14:03:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:03:38,522 INFO L388 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 13 treesize of output 9 [2021-10-22 14:03:38,544 INFO L388 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 11 treesize of output 7 [2021-10-22 14:03:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:03:38,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832193584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:38,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:03:38,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-10-22 14:03:38,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118264437] [2021-10-22 14:03:38,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-22 14:03:38,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-22 14:03:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-22 14:03:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:38,589 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 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) [2021-10-22 14:03:38,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:38,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:38,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-22 14:03:38,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:38,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1345646331, now seen corresponding path program 3 times [2021-10-22 14:03:38,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:38,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002854845] [2021-10-22 14:03:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:38,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-22 14:03:38,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:38,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002854845] [2021-10-22 14:03:38,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002854845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:03:38,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 14:03:38,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-22 14:03:38,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267192177] [2021-10-22 14:03:38,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-22 14:03:38,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:38,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-22 14:03:38,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-22 14:03:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:38,961 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:38,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-10-22 14:03:38,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:38,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:38,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:38,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-22 14:03:38,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:38,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2119059194, now seen corresponding path program 4 times [2021-10-22 14:03:38,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:38,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955807066] [2021-10-22 14:03:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:38,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-22 14:03:39,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955807066] [2021-10-22 14:03:39,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955807066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839446151] [2021-10-22 14:03:39,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-22 14:03:39,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:39,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:03:39,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-22 14:03:39,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-22 14:03:39,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:03:39,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-22 14:03:39,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:03:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-22 14:03:39,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839446151] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:03:39,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-22 14:03:39,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-10-22 14:03:39,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267986414] [2021-10-22 14:03:39,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-22 14:03:39,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:39,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-22 14:03:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-22 14:03:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:39,291 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:39,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-10-22 14:03:39,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:39,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:39,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:39,291 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:03:39,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-22 14:03:39,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:39,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -647274333, now seen corresponding path program 1 times [2021-10-22 14:03:39,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:39,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139861197] [2021-10-22 14:03:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:39,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-22 14:03:40,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:40,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139861197] [2021-10-22 14:03:40,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139861197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:40,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297859019] [2021-10-22 14:03:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:40,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:40,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:03:40,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-22 14:03:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-22 14:03:40,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:03:41,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-22 14:03:41,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 96 [2021-10-22 14:03:42,486 INFO L354 Elim1Store]: treesize reduction 164, result has 4.1 percent of original size [2021-10-22 14:03:42,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 32 [2021-10-22 14:03:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 72 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 14:03:42,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297859019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:42,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:03:42,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 44 [2021-10-22 14:03:42,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984079097] [2021-10-22 14:03:42,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-22 14:03:42,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-22 14:03:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1731, Unknown=0, NotChecked=0, Total=1980 [2021-10-22 14:03:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:42,525 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:42,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 44 states have internal predecessors, (86), 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) [2021-10-22 14:03:42,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:42,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:42,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:42,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:03:42,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:03:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-22 14:03:44,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-22 14:03:44,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:44,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:03:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:03:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1106103869, now seen corresponding path program 2 times [2021-10-22 14:03:44,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:03:44,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595596245] [2021-10-22 14:03:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:03:44,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:03:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:03:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 2 proven. 156 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-22 14:03:45,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:03:45,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595596245] [2021-10-22 14:03:45,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595596245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:45,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277574092] [2021-10-22 14:03:45,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-22 14:03:45,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:03:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:03:45,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:03:45,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-22 14:03:45,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-22 14:03:45,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:03:45,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-22 14:03:45,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:03:49,229 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-22 14:03:49,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 188 [2021-10-22 14:03:50,026 INFO L354 Elim1Store]: treesize reduction 316, result has 2.2 percent of original size [2021-10-22 14:03:50,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 78 treesize of output 38 [2021-10-22 14:03:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 34 proven. 152 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 14:03:50,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277574092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:03:50,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:03:50,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 38] total 57 [2021-10-22 14:03:50,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667078017] [2021-10-22 14:03:50,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-22 14:03:50,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:03:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-22 14:03:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=2941, Unknown=0, NotChecked=0, Total=3306 [2021-10-22 14:03:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:03:50,064 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:03:50,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 57 states have internal predecessors, (106), 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) [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-10-22 14:03:50,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:04:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:04:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:04:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:04:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:04:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-22 14:04:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-22 14:04:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-22 14:04:09,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:04:09,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:04:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:04:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1642718252, now seen corresponding path program 3 times [2021-10-22 14:04:09,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:04:09,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738399272] [2021-10-22 14:04:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:04:09,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:04:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:04:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 256 proven. 73 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-22 14:04:09,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:04:09,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738399272] [2021-10-22 14:04:09,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738399272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:04:09,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234354619] [2021-10-22 14:04:09,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-22 14:04:09,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:04:09,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:04:09,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:04:09,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-22 14:04:10,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-22 14:04:10,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:04:10,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-22 14:04:10,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:04:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 289 proven. 32 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-22 14:04:10,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234354619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:04:10,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:04:10,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-10-22 14:04:10,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462730510] [2021-10-22 14:04:10,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-22 14:04:10,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:04:10,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-22 14:04:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-22 14:04:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:04:10,336 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:04:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2021-10-22 14:04:10,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:04:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-22 14:04:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:04:10,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-22 14:04:10,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:04:10,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-22 14:04:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:04:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash -897183861, now seen corresponding path program 4 times [2021-10-22 14:04:10,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:04:10,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714787063] [2021-10-22 14:04:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:04:10,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:04:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:04:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 6 proven. 579 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-22 14:04:12,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:04:12,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714787063] [2021-10-22 14:04:12,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714787063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:04:12,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758591850] [2021-10-22 14:04:12,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-22 14:04:12,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:04:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:04:12,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:04:12,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-22 14:04:12,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-22 14:04:12,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:04:12,952 WARN L261 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 143 conjunts are in the unsatisfiable core [2021-10-22 14:04:12,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:05:25,308 WARN L224 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-22 14:05:25,309 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2021-10-22 14:05:25,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-22 14:05:25,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-22 14:05:25,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-22 14:05:25,510 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:438) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:235) ... 46 more [2021-10-22 14:05:25,514 INFO L168 Benchmark]: Toolchain (without parser) took 108430.15 ms. Allocated memory was 186.6 MB in the beginning and 442.5 MB in the end (delta: 255.9 MB). Free memory was 144.8 MB in the beginning and 343.9 MB in the end (delta: -199.1 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. [2021-10-22 14:05:25,514 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-22 14:05:25,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.71 ms. Allocated memory is still 186.6 MB. Free memory was 144.7 MB in the beginning and 143.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-22 14:05:25,514 INFO L168 Benchmark]: Boogie Preprocessor took 13.27 ms. Allocated memory is still 186.6 MB. Free memory was 143.2 MB in the beginning and 142.3 MB in the end (delta: 894.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-22 14:05:25,515 INFO L168 Benchmark]: RCFGBuilder took 185.58 ms. Allocated memory is still 186.6 MB. Free memory was 142.2 MB in the beginning and 129.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-22 14:05:25,518 INFO L168 Benchmark]: TraceAbstraction took 108204.27 ms. Allocated memory was 186.6 MB in the beginning and 442.5 MB in the end (delta: 255.9 MB). Free memory was 128.8 MB in the beginning and 343.9 MB in the end (delta: -215.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2021-10-22 14:05:25,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.71 ms. Allocated memory is still 186.6 MB. Free memory was 144.7 MB in the beginning and 143.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.27 ms. Allocated memory is still 186.6 MB. Free memory was 143.2 MB in the beginning and 142.3 MB in the end (delta: 894.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 185.58 ms. Allocated memory is still 186.6 MB. Free memory was 142.2 MB in the beginning and 129.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 108204.27 ms. Allocated memory was 186.6 MB in the beginning and 442.5 MB in the end (delta: 255.9 MB). Free memory was 128.8 MB in the beginning and 343.9 MB in the end (delta: -215.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-22 14:05:25,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 Received shutdown request...