/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-MCRwithDepranks-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 03:37:53,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 03:37:53,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 03:37:53,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 03:37:53,783 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-MCRwithDepranks-BasicCegarLoop.epf [2022-02-10 03:37:53,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 03:37:53,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 03:37:53,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 03:37:53,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 03:37:53,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 03:37:53,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 03:37:53,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 03:37:53,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 03:37:53,802 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 03:37:53,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 03:37:53,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 03:37:53,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 03:37:53,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:37:53,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 03:37:53,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 03:37:53,806 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 03:37:53,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 03:37:53,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 03:37:54,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 03:37:54,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 03:37:54,008 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 03:37:54,009 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 03:37:54,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl [2022-02-10 03:37:54,010 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl' [2022-02-10 03:37:54,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 03:37:54,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 03:37:54,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 03:37:54,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 03:37:54,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 03:37:54,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,067 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 03:37:54,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 03:37:54,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 03:37:54,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 03:37:54,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 03:37:54,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 03:37:54,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 03:37:54,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 03:37:54,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 03:37:54,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/1) ... [2022-02-10 03:37:54,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:37:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:37:54,122 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) [2022-02-10 03:37:54,136 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 [2022-02-10 03:37:54,160 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 03:37:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 03:37:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 03:37:54,161 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 03:37:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 03:37:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 03:37:54,161 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 03:37:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 03:37:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 03:37:54,163 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 03:37:54,200 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 03:37:54,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 03:37:54,333 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 03:37:54,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 03:37:54,349 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 03:37:54,351 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:37:54 BoogieIcfgContainer [2022-02-10 03:37:54,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 03:37:54,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 03:37:54,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 03:37:54,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 03:37:54,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:37:54" (1/2) ... [2022-02-10 03:37:54,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a9762e and model type dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 03:37:54, skipping insertion in model container [2022-02-10 03:37:54,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:37:54" (2/2) ... [2022-02-10 03:37:54,359 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq-array.wvr.bpl [2022-02-10 03:37:54,363 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 03:37:54,363 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 03:37:54,364 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 03:37:54,364 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 03:37:54,424 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 03:37:54,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 03:37:54,474 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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 [2022-02-10 03:37:54,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 03:37:54,487 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 72 flow [2022-02-10 03:37:54,518 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 63 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 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) [2022-02-10 03:37:59,102 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 223473 transitions and produced 112297 states. [2022-02-10 03:37:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 112297 states, 85139 states have (on average 1.8943962226476703) internal successors, (161287), 112296 states have internal predecessors, (161287), 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) [2022-02-10 03:37:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:37:59,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:37:59,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:37:59,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:37:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:37:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1160028785, now seen corresponding path program 1 times [2022-02-10 03:38:00,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:00,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066335897] [2022-02-10 03:38:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:00,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:00,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:00,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066335897] [2022-02-10 03:38:00,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066335897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:38:00,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:38:00,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:38:00,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592707620] [2022-02-10 03:38:00,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:38:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:38:00,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:38:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:38:00,708 INFO L87 Difference]: Start difference. First operand has 112297 states, 85139 states have (on average 1.8943962226476703) internal successors, (161287), 112296 states have internal predecessors, (161287), 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) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-10 03:38:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:02,766 INFO L93 Difference]: Finished difference Result 112033 states and 161023 transitions. [2022-02-10 03:38:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:38:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2022-02-10 03:38:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:03,390 INFO L225 Difference]: With dead ends: 112033 [2022-02-10 03:38:03,391 INFO L226 Difference]: Without dead ends: 78800 [2022-02-10 03:38:03,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:38:03,400 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:03,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:38:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78800 states. [2022-02-10 03:38:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78800 to 55. [2022-02-10 03:38:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 54 states have internal predecessors, (83), 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) [2022-02-10 03:38:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 83 transitions. [2022-02-10 03:38:04,709 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 83 transitions. Word has length 14 [2022-02-10 03:38:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:04,711 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 83 transitions. [2022-02-10 03:38:04,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-10 03:38:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2022-02-10 03:38:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:38:04,714 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:04,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:04,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 03:38:04,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -316006220, now seen corresponding path program 1 times [2022-02-10 03:38:04,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:04,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861665054] [2022-02-10 03:38:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:04,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:04,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:04,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861665054] [2022-02-10 03:38:04,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861665054] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:38:04,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:38:04,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:38:04,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869391082] [2022-02-10 03:38:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:38:04,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:38:04,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:38:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:38:04,850 INFO L87 Difference]: Start difference. First operand 55 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-02-10 03:38:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:04,892 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2022-02-10 03:38:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:38:04,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 18 [2022-02-10 03:38:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:04,894 INFO L225 Difference]: With dead ends: 67 [2022-02-10 03:38:04,894 INFO L226 Difference]: Without dead ends: 63 [2022-02-10 03:38:04,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:38:04,897 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:04,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:38:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-10 03:38:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-02-10 03:38:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 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) [2022-02-10 03:38:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 97 transitions. [2022-02-10 03:38:04,901 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 97 transitions. Word has length 18 [2022-02-10 03:38:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:04,902 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 97 transitions. [2022-02-10 03:38:04,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-02-10 03:38:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 97 transitions. [2022-02-10 03:38:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 03:38:04,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:04,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:04,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 03:38:04,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash 151362758, now seen corresponding path program 1 times [2022-02-10 03:38:04,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:04,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42463049] [2022-02-10 03:38:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:04,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:05,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:05,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42463049] [2022-02-10 03:38:05,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42463049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:05,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103044675] [2022-02-10 03:38:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:05,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:05,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:05,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:05,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 03:38:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:05,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 03:38:05,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:05,291 INFO L387 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 [2022-02-10 03:38:05,350 INFO L387 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 [2022-02-10 03:38:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:05,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:05,493 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:05,494 INFO L387 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 15 treesize of output 19 [2022-02-10 03:38:05,553 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:05,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103044675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:05,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:05,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2022-02-10 03:38:05,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718210717] [2022-02-10 03:38:05,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:05,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 03:38:05,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 03:38:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:38:05,614 INFO L87 Difference]: Start difference. First operand 63 states and 97 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2022-02-10 03:38:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:05,750 INFO L93 Difference]: Finished difference Result 125 states and 198 transitions. [2022-02-10 03:38:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:38:05,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) Word has length 23 [2022-02-10 03:38:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:05,751 INFO L225 Difference]: With dead ends: 125 [2022-02-10 03:38:05,751 INFO L226 Difference]: Without dead ends: 115 [2022-02-10 03:38:05,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:38:05,752 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:05,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 97 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:38:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-10 03:38:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2022-02-10 03:38:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 92 states have internal predecessors, (141), 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) [2022-02-10 03:38:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 141 transitions. [2022-02-10 03:38:05,757 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 141 transitions. Word has length 23 [2022-02-10 03:38:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:05,757 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 141 transitions. [2022-02-10 03:38:05,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2022-02-10 03:38:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 141 transitions. [2022-02-10 03:38:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-10 03:38:05,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:05,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:05,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:05,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:05,977 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2001999735, now seen corresponding path program 2 times [2022-02-10 03:38:05,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:05,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766644680] [2022-02-10 03:38:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:05,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:06,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:06,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766644680] [2022-02-10 03:38:06,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766644680] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:06,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516557292] [2022-02-10 03:38:06,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:38:06,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:06,036 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) [2022-02-10 03:38:06,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 03:38:06,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:38:06,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:06,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 03:38:06,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:06,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:06,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516557292] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:06,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:06,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 6 [2022-02-10 03:38:06,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082189422] [2022-02-10 03:38:06,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:06,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 03:38:06,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:06,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 03:38:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:38:06,207 INFO L87 Difference]: Start difference. First operand 93 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2022-02-10 03:38:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:06,293 INFO L93 Difference]: Finished difference Result 217 states and 311 transitions. [2022-02-10 03:38:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:38:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) Word has length 27 [2022-02-10 03:38:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:06,295 INFO L225 Difference]: With dead ends: 217 [2022-02-10 03:38:06,295 INFO L226 Difference]: Without dead ends: 208 [2022-02-10 03:38:06,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:38:06,298 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:06,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 81 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:38:06,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-10 03:38:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 186. [2022-02-10 03:38:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5135135135135136) internal successors, (280), 185 states have internal predecessors, (280), 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) [2022-02-10 03:38:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 280 transitions. [2022-02-10 03:38:06,316 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 280 transitions. Word has length 27 [2022-02-10 03:38:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:06,316 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 280 transitions. [2022-02-10 03:38:06,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2022-02-10 03:38:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 280 transitions. [2022-02-10 03:38:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:06,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:06,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:06,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:06,538 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,SelfDestructingSolverStorable3 [2022-02-10 03:38:06,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1394991287, now seen corresponding path program 3 times [2022-02-10 03:38:06,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:06,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216904019] [2022-02-10 03:38:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:06,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:06,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:06,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216904019] [2022-02-10 03:38:06,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216904019] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:06,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740559092] [2022-02-10 03:38:06,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:38:06,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:06,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:06,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:06,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 03:38:06,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:38:06,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:06,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 03:38:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:07,201 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:07,202 INFO L387 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 29 treesize of output 27 [2022-02-10 03:38:07,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:07,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-02-10 03:38:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:07,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:09,023 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:09,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 45 [2022-02-10 03:38:09,105 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:09,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740559092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:09,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:09,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 34 [2022-02-10 03:38:09,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10382970] [2022-02-10 03:38:09,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:09,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-10 03:38:09,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-10 03:38:09,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:38:09,177 INFO L87 Difference]: Start difference. First operand 186 states and 280 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 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) [2022-02-10 03:38:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:10,273 INFO L93 Difference]: Finished difference Result 369 states and 563 transitions. [2022-02-10 03:38:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 03:38:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 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) Word has length 32 [2022-02-10 03:38:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:10,280 INFO L225 Difference]: With dead ends: 369 [2022-02-10 03:38:10,280 INFO L226 Difference]: Without dead ends: 351 [2022-02-10 03:38:10,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=565, Invalid=2857, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 03:38:10,282 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 142 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:10,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 376 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 348 Invalid, 0 Unknown, 305 Unchecked, 0.2s Time] [2022-02-10 03:38:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-02-10 03:38:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 244. [2022-02-10 03:38:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5884773662551441) internal successors, (386), 243 states have internal predecessors, (386), 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) [2022-02-10 03:38:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 386 transitions. [2022-02-10 03:38:10,289 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 386 transitions. Word has length 32 [2022-02-10 03:38:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:10,289 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 386 transitions. [2022-02-10 03:38:10,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 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) [2022-02-10 03:38:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 386 transitions. [2022-02-10 03:38:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:10,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:10,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:10,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:10,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:10,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash 27455057, now seen corresponding path program 4 times [2022-02-10 03:38:10,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:10,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497099184] [2022-02-10 03:38:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:10,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:10,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:10,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497099184] [2022-02-10 03:38:10,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497099184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:10,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658641448] [2022-02-10 03:38:10,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:38:10,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:10,885 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) [2022-02-10 03:38:10,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 03:38:10,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:38:10,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:10,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:38:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:11,153 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:11,154 INFO L387 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 29 treesize of output 27 [2022-02-10 03:38:11,329 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-10 03:38:11,329 INFO L387 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 22 treesize of output 10 [2022-02-10 03:38:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:11,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:11,648 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:11,649 INFO L387 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 34 treesize of output 56 [2022-02-10 03:38:11,838 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:11,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658641448] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:11,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:11,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 25 [2022-02-10 03:38:11,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058368138] [2022-02-10 03:38:11,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:11,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:38:11,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:38:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:38:11,883 INFO L87 Difference]: Start difference. First operand 244 states and 386 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 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) [2022-02-10 03:38:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:12,404 INFO L93 Difference]: Finished difference Result 457 states and 707 transitions. [2022-02-10 03:38:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:38:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 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) Word has length 32 [2022-02-10 03:38:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:12,406 INFO L225 Difference]: With dead ends: 457 [2022-02-10 03:38:12,406 INFO L226 Difference]: Without dead ends: 447 [2022-02-10 03:38:12,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:38:12,407 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 148 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:12,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 276 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 556 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2022-02-10 03:38:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-10 03:38:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 230. [2022-02-10 03:38:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5502183406113537) internal successors, (355), 229 states have internal predecessors, (355), 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) [2022-02-10 03:38:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2022-02-10 03:38:12,413 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 32 [2022-02-10 03:38:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:12,413 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2022-02-10 03:38:12,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 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) [2022-02-10 03:38:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2022-02-10 03:38:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:12,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:12,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:12,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:12,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:12,615 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2096069043, now seen corresponding path program 5 times [2022-02-10 03:38:12,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:12,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447433837] [2022-02-10 03:38:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:12,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:38:12,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:12,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447433837] [2022-02-10 03:38:12,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447433837] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:12,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549361103] [2022-02-10 03:38:12,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:38:12,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:12,923 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) [2022-02-10 03:38:12,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 03:38:12,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:38:12,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:12,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:38:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:13,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:13,441 INFO L387 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 24 treesize of output 24 [2022-02-10 03:38:13,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:13,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:13,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:13,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-02-10 03:38:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:13,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:13,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:13,907 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:13,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 57 [2022-02-10 03:38:14,092 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:14,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549361103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:14,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:14,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-02-10 03:38:14,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57410970] [2022-02-10 03:38:14,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:14,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-10 03:38:14,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-10 03:38:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:38:14,209 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 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) [2022-02-10 03:38:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:14,619 INFO L93 Difference]: Finished difference Result 424 states and 660 transitions. [2022-02-10 03:38:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:38:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 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) Word has length 32 [2022-02-10 03:38:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:14,621 INFO L225 Difference]: With dead ends: 424 [2022-02-10 03:38:14,621 INFO L226 Difference]: Without dead ends: 409 [2022-02-10 03:38:14,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:38:14,622 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 97 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:14,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 100 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 238 Invalid, 0 Unknown, 204 Unchecked, 0.1s Time] [2022-02-10 03:38:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-10 03:38:14,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 256. [2022-02-10 03:38:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.588235294117647) internal successors, (405), 255 states have internal predecessors, (405), 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) [2022-02-10 03:38:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 405 transitions. [2022-02-10 03:38:14,627 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 405 transitions. Word has length 32 [2022-02-10 03:38:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 405 transitions. [2022-02-10 03:38:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 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) [2022-02-10 03:38:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 405 transitions. [2022-02-10 03:38:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:14,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:14,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:14,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:14,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:14,853 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash -845481489, now seen corresponding path program 6 times [2022-02-10 03:38:14,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:14,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258630508] [2022-02-10 03:38:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:14,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:15,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:15,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258630508] [2022-02-10 03:38:15,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258630508] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:15,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802418125] [2022-02-10 03:38:15,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:38:15,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:15,139 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) [2022-02-10 03:38:15,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 03:38:15,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:38:15,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:38:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:15,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:15,444 INFO L387 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 29 treesize of output 27 [2022-02-10 03:38:15,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:15,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:15,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:15,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-02-10 03:38:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:15,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:16,046 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:16,047 INFO L387 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 35 treesize of output 57 [2022-02-10 03:38:16,145 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:16,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802418125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:16,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:16,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 29 [2022-02-10 03:38:16,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208197818] [2022-02-10 03:38:16,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:16,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 03:38:16,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 03:38:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:38:16,192 INFO L87 Difference]: Start difference. First operand 256 states and 405 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 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) [2022-02-10 03:38:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:16,645 INFO L93 Difference]: Finished difference Result 395 states and 602 transitions. [2022-02-10 03:38:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:38:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 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) Word has length 32 [2022-02-10 03:38:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:16,646 INFO L225 Difference]: With dead ends: 395 [2022-02-10 03:38:16,646 INFO L226 Difference]: Without dead ends: 376 [2022-02-10 03:38:16,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=274, Invalid=1208, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:38:16,649 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 119 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:16,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 159 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 341 Invalid, 0 Unknown, 183 Unchecked, 0.2s Time] [2022-02-10 03:38:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-02-10 03:38:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 303. [2022-02-10 03:38:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.5894039735099337) internal successors, (480), 302 states have internal predecessors, (480), 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) [2022-02-10 03:38:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 480 transitions. [2022-02-10 03:38:16,654 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 480 transitions. Word has length 32 [2022-02-10 03:38:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:16,655 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 480 transitions. [2022-02-10 03:38:16,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 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) [2022-02-10 03:38:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 480 transitions. [2022-02-10 03:38:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:16,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:16,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:16,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-10 03:38:16,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:16,881 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:16,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash -589360435, now seen corresponding path program 7 times [2022-02-10 03:38:16,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:16,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975907215] [2022-02-10 03:38:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:16,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:38:17,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:17,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975907215] [2022-02-10 03:38:17,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975907215] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:17,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85872666] [2022-02-10 03:38:17,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:38:17,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:17,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:17,144 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) [2022-02-10 03:38:17,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 03:38:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:17,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:38:17,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:17,547 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:17,548 INFO L387 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 26 treesize of output 26 [2022-02-10 03:38:17,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:17,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:17,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:17,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-02-10 03:38:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:17,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:18,031 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:18,031 INFO L387 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 34 treesize of output 56 [2022-02-10 03:38:18,207 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:18,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85872666] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:18,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:18,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 28 [2022-02-10 03:38:18,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655076314] [2022-02-10 03:38:18,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:18,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:38:18,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:38:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:38:18,255 INFO L87 Difference]: Start difference. First operand 303 states and 480 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 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) [2022-02-10 03:38:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:18,560 INFO L93 Difference]: Finished difference Result 444 states and 672 transitions. [2022-02-10 03:38:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:38:18,561 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 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) Word has length 32 [2022-02-10 03:38:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:18,562 INFO L225 Difference]: With dead ends: 444 [2022-02-10 03:38:18,562 INFO L226 Difference]: Without dead ends: 417 [2022-02-10 03:38:18,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=1088, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:38:18,563 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:18,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 218 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 189 Invalid, 0 Unknown, 262 Unchecked, 0.1s Time] [2022-02-10 03:38:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-10 03:38:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 329. [2022-02-10 03:38:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.5884146341463414) internal successors, (521), 328 states have internal predecessors, (521), 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) [2022-02-10 03:38:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 521 transitions. [2022-02-10 03:38:18,569 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 521 transitions. Word has length 32 [2022-02-10 03:38:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:18,569 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 521 transitions. [2022-02-10 03:38:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 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) [2022-02-10 03:38:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 521 transitions. [2022-02-10 03:38:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-10 03:38:18,570 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:18,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:18,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:18,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:18,771 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1424352939, now seen corresponding path program 8 times [2022-02-10 03:38:18,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:18,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311321140] [2022-02-10 03:38:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:18,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:38:19,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:19,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311321140] [2022-02-10 03:38:19,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311321140] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:19,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617540118] [2022-02-10 03:38:19,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:38:19,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:19,061 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) [2022-02-10 03:38:19,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 03:38:19,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:38:19,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:38:19,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:19,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:19,434 INFO L387 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 24 treesize of output 24 [2022-02-10 03:38:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:19,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:19,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-02-10 03:38:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:19,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:19,910 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:19,910 INFO L387 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 35 treesize of output 57 [2022-02-10 03:38:20,016 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:38:20,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617540118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:20,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:20,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 26 [2022-02-10 03:38:20,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180797647] [2022-02-10 03:38:20,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:20,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:38:20,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:38:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:38:20,077 INFO L87 Difference]: Start difference. First operand 329 states and 521 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 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) [2022-02-10 03:38:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:20,411 INFO L93 Difference]: Finished difference Result 575 states and 892 transitions. [2022-02-10 03:38:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:38:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 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) Word has length 32 [2022-02-10 03:38:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:20,413 INFO L225 Difference]: With dead ends: 575 [2022-02-10 03:38:20,413 INFO L226 Difference]: Without dead ends: 545 [2022-02-10 03:38:20,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:38:20,414 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:20,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 224 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 421 Invalid, 0 Unknown, 207 Unchecked, 0.2s Time] [2022-02-10 03:38:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-02-10 03:38:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 338. [2022-02-10 03:38:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.5786350148367954) internal successors, (532), 337 states have internal predecessors, (532), 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) [2022-02-10 03:38:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 532 transitions. [2022-02-10 03:38:20,420 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 532 transitions. Word has length 32 [2022-02-10 03:38:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:20,420 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 532 transitions. [2022-02-10 03:38:20,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 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) [2022-02-10 03:38:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 532 transitions. [2022-02-10 03:38:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:20,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:20,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:20,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:20,637 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,SelfDestructingSolverStorable9 [2022-02-10 03:38:20,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash -668885306, now seen corresponding path program 1 times [2022-02-10 03:38:20,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:20,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356470627] [2022-02-10 03:38:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:20,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:20,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:20,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356470627] [2022-02-10 03:38:20,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356470627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:20,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708735970] [2022-02-10 03:38:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:20,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:20,912 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 03:38:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:38:20,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:21,294 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:21,294 INFO L387 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 26 treesize of output 26 [2022-02-10 03:38:21,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:21,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:21,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:21,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-02-10 03:38:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:21,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:21,752 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:21,752 INFO L387 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 34 treesize of output 56 [2022-02-10 03:38:21,861 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:21,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708735970] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:21,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:21,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 28 [2022-02-10 03:38:21,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015180183] [2022-02-10 03:38:21,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:21,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:38:21,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:38:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:38:21,909 INFO L87 Difference]: Start difference. First operand 338 states and 532 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 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) [2022-02-10 03:38:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:22,135 INFO L93 Difference]: Finished difference Result 524 states and 813 transitions. [2022-02-10 03:38:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:38:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 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) Word has length 35 [2022-02-10 03:38:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:22,141 INFO L225 Difference]: With dead ends: 524 [2022-02-10 03:38:22,141 INFO L226 Difference]: Without dead ends: 503 [2022-02-10 03:38:22,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:38:22,142 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:22,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 139 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 206 Invalid, 0 Unknown, 261 Unchecked, 0.1s Time] [2022-02-10 03:38:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-02-10 03:38:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 358. [2022-02-10 03:38:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.607843137254902) internal successors, (574), 357 states have internal predecessors, (574), 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) [2022-02-10 03:38:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 574 transitions. [2022-02-10 03:38:22,149 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 574 transitions. Word has length 35 [2022-02-10 03:38:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:22,149 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 574 transitions. [2022-02-10 03:38:22,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 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) [2022-02-10 03:38:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 574 transitions. [2022-02-10 03:38:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:22,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:22,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:22,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:22,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:22,363 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1267673798, now seen corresponding path program 2 times [2022-02-10 03:38:22,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:22,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053257418] [2022-02-10 03:38:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:22,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-10 03:38:22,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:22,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053257418] [2022-02-10 03:38:22,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053257418] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:38:22,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:38:22,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 03:38:22,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325300729] [2022-02-10 03:38:22,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:38:22,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 03:38:22,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 03:38:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:38:22,389 INFO L87 Difference]: Start difference. First operand 358 states and 574 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-02-10 03:38:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:22,403 INFO L93 Difference]: Finished difference Result 353 states and 551 transitions. [2022-02-10 03:38:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 03:38:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) Word has length 35 [2022-02-10 03:38:22,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:22,404 INFO L225 Difference]: With dead ends: 353 [2022-02-10 03:38:22,404 INFO L226 Difference]: Without dead ends: 353 [2022-02-10 03:38:22,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 03:38:22,405 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:22,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:38:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-10 03:38:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 312. [2022-02-10 03:38:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.639871382636656) internal successors, (510), 311 states have internal predecessors, (510), 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) [2022-02-10 03:38:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 510 transitions. [2022-02-10 03:38:22,414 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 510 transitions. Word has length 35 [2022-02-10 03:38:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:22,414 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 510 transitions. [2022-02-10 03:38:22,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-02-10 03:38:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 510 transitions. [2022-02-10 03:38:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:22,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:22,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:22,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 03:38:22,416 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 992621160, now seen corresponding path program 3 times [2022-02-10 03:38:22,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:22,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254083532] [2022-02-10 03:38:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:22,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:22,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:22,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254083532] [2022-02-10 03:38:22,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254083532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:22,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957205733] [2022-02-10 03:38:22,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:38:22,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:22,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:22,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:22,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 03:38:22,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:38:22,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:38:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:22,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:22,924 INFO L387 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 29 treesize of output 27 [2022-02-10 03:38:23,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:23,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-02-10 03:38:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:23,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:23,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:23,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:23,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:23,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39 [2022-02-10 03:38:23,900 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:23,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957205733] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:23,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:23,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 35 [2022-02-10 03:38:23,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511177285] [2022-02-10 03:38:23,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:23,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-10 03:38:23,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-10 03:38:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:38:23,944 INFO L87 Difference]: Start difference. First operand 312 states and 510 transitions. Second operand has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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) [2022-02-10 03:38:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:24,881 INFO L93 Difference]: Finished difference Result 937 states and 1468 transitions. [2022-02-10 03:38:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 03:38:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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) Word has length 35 [2022-02-10 03:38:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:24,882 INFO L225 Difference]: With dead ends: 937 [2022-02-10 03:38:24,883 INFO L226 Difference]: Without dead ends: 931 [2022-02-10 03:38:24,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=602, Invalid=2590, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 03:38:24,884 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 250 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:24,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 495 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 635 Invalid, 0 Unknown, 285 Unchecked, 0.4s Time] [2022-02-10 03:38:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-02-10 03:38:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 377. [2022-02-10 03:38:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.678191489361702) internal successors, (631), 376 states have internal predecessors, (631), 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) [2022-02-10 03:38:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 631 transitions. [2022-02-10 03:38:24,892 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 631 transitions. Word has length 35 [2022-02-10 03:38:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:24,892 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 631 transitions. [2022-02-10 03:38:24,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 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) [2022-02-10 03:38:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 631 transitions. [2022-02-10 03:38:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:24,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:24,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:24,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:25,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-10 03:38:25,116 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1693698916, now seen corresponding path program 4 times [2022-02-10 03:38:25,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:25,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742992346] [2022-02-10 03:38:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:25,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:25,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:25,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742992346] [2022-02-10 03:38:25,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742992346] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:25,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948140944] [2022-02-10 03:38:25,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:38:25,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:25,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:25,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 03:38:25,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:38:25,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:25,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:38:25,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:25,800 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:25,800 INFO L387 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 26 treesize of output 26 [2022-02-10 03:38:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-10 03:38:25,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:38:25,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-02-10 03:38:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:25,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:26,337 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:26,338 INFO L387 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 34 treesize of output 56 [2022-02-10 03:38:26,419 INFO L387 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 17 treesize of output 13 [2022-02-10 03:38:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:26,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948140944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:26,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:26,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 28 [2022-02-10 03:38:26,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400356226] [2022-02-10 03:38:26,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:26,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-10 03:38:26,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-10 03:38:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:38:26,455 INFO L87 Difference]: Start difference. First operand 377 states and 631 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 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) [2022-02-10 03:38:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:26,728 INFO L93 Difference]: Finished difference Result 562 states and 930 transitions. [2022-02-10 03:38:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:38:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 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) Word has length 35 [2022-02-10 03:38:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:26,730 INFO L225 Difference]: With dead ends: 562 [2022-02-10 03:38:26,730 INFO L226 Difference]: Without dead ends: 551 [2022-02-10 03:38:26,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:38:26,731 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:26,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 146 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 268 Invalid, 0 Unknown, 250 Unchecked, 0.1s Time] [2022-02-10 03:38:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-02-10 03:38:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 364. [2022-02-10 03:38:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6666666666666667) internal successors, (605), 363 states have internal predecessors, (605), 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) [2022-02-10 03:38:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 605 transitions. [2022-02-10 03:38:26,736 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 605 transitions. Word has length 35 [2022-02-10 03:38:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:26,736 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 605 transitions. [2022-02-10 03:38:26,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 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) [2022-02-10 03:38:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 605 transitions. [2022-02-10 03:38:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:26,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:26,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:26,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-10 03:38:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-10 03:38:26,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1247851616, now seen corresponding path program 5 times [2022-02-10 03:38:26,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:26,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321070283] [2022-02-10 03:38:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:26,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:27,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:27,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321070283] [2022-02-10 03:38:27,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321070283] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:27,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90113247] [2022-02-10 03:38:27,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:38:27,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:27,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:27,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:27,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 03:38:27,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:38:27,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 03:38:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:27,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:27,509 INFO L387 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 29 treesize of output 27 [2022-02-10 03:38:27,640 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-10 03:38:27,640 INFO L387 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 22 treesize of output 10 [2022-02-10 03:38:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:27,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:38:27,965 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-10 03:38:27,965 INFO L387 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 35 treesize of output 57 [2022-02-10 03:38:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-10 03:38:28,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90113247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:38:28,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:38:28,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 32 [2022-02-10 03:38:28,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385056080] [2022-02-10 03:38:28,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:38:28,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 03:38:28,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:38:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 03:38:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:38:28,113 INFO L87 Difference]: Start difference. First operand 364 states and 605 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 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) [2022-02-10 03:38:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:38:29,264 INFO L93 Difference]: Finished difference Result 929 states and 1517 transitions. [2022-02-10 03:38:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 03:38:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 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) Word has length 35 [2022-02-10 03:38:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:38:29,267 INFO L225 Difference]: With dead ends: 929 [2022-02-10 03:38:29,267 INFO L226 Difference]: Without dead ends: 889 [2022-02-10 03:38:29,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=596, Invalid=3064, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 03:38:29,268 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 200 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:38:29,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 263 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 866 Invalid, 0 Unknown, 149 Unchecked, 0.4s Time] [2022-02-10 03:38:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-02-10 03:38:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 343. [2022-02-10 03:38:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.6578947368421053) internal successors, (567), 342 states have internal predecessors, (567), 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) [2022-02-10 03:38:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 567 transitions. [2022-02-10 03:38:29,276 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 567 transitions. Word has length 35 [2022-02-10 03:38:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:38:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 567 transitions. [2022-02-10 03:38:29,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 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) [2022-02-10 03:38:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 567 transitions. [2022-02-10 03:38:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-10 03:38:29,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:38:29,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:38:29,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 03:38:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 03:38:29,500 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 03:38:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:38:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -991730562, now seen corresponding path program 6 times [2022-02-10 03:38:29,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:38:29,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341278405] [2022-02-10 03:38:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:38:29,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:38:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:38:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:29,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:38:29,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341278405] [2022-02-10 03:38:29,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341278405] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:38:29,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571391466] [2022-02-10 03:38:29,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:38:29,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:38:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:38:29,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:38:29,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 03:38:29,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:38:29,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:38:29,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 03:38:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:38:30,098 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:30,098 INFO L387 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 24 treesize of output 24 [2022-02-10 03:38:30,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:38:30,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-02-10 03:38:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 03:38:30,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-02-10 03:52:04,489 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:52:04,489 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:52:04,492 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-10 03:52:04,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 03:52:04,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-02-10 03:52:04,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-10 03:52:04,694 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 31ms.. [2022-02-10 03:52:04,695 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 03:52:04,695 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 03:52:04,697 INFO L732 BasicCegarLoop]: Path program histogram: [8, 6, 1, 1] [2022-02-10 03:52:04,699 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 03:52:04,699 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 03:52:04,701 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 03:52:04 BasicIcfg [2022-02-10 03:52:04,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 03:52:04,701 INFO L158 Benchmark]: Toolchain (without parser) took 850665.30ms. Allocated memory was 178.3MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 138.7MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-02-10 03:52:04,701 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:52:04,702 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.89ms. Allocated memory is still 178.3MB. Free memory was 138.6MB in the beginning and 137.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 03:52:04,702 INFO L158 Benchmark]: Boogie Preprocessor took 19.85ms. Allocated memory is still 178.3MB. Free memory was 137.2MB in the beginning and 136.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 03:52:04,702 INFO L158 Benchmark]: RCFGBuilder took 258.62ms. Allocated memory is still 178.3MB. Free memory was 136.1MB in the beginning and 126.9MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-10 03:52:04,702 INFO L158 Benchmark]: TraceAbstraction took 850347.77ms. Allocated memory was 178.3MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 126.3MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2022-02-10 03:52:04,703 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 0.15ms. Allocated memory is still 178.3MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.89ms. Allocated memory is still 178.3MB. Free memory was 138.6MB in the beginning and 137.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.85ms. Allocated memory is still 178.3MB. Free memory was 137.2MB in the beginning and 136.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 258.62ms. Allocated memory is still 178.3MB. Free memory was 136.1MB in the beginning and 126.9MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 850347.77ms. Allocated memory was 178.3MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 126.3MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 31ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 31ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 36 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 31ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 850.2s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.9s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, PartialOrderReductionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1423 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1423 mSDsluCounter, 2660 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2182 IncrementalHoareTripleChecker+Unchecked, 3053 mSDsCounter, 417 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4385 IncrementalHoareTripleChecker+Invalid, 6984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 417 mSolverCounterUnsat, 346 mSDtfsCounter, 4385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1090 GetRequests, 622 SyntacticMatches, 28 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6655 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112297occurred in iteration=0, InterpolantAutomatonStates: 298, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 81107 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 831 NumberOfCodeBlocks, 828 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1174 ConstructedInterpolants, 157 QuantifiedInterpolants, 13242 SizeOfPredicates, 192 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 89/522 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown