/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/chl/word-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 03:15:21,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 03:15:21,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 03:15:21,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 03:15:21,210 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 03:15:21,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 03:15:21,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 03:15:21,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 03:15:21,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 03:15:21,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 03:15:21,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 03:15:21,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 03:15:21,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 03:15:21,230 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 03:15:21,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 03:15:21,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 03:15:21,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 03:15:21,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:15:21,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 03:15:21,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 03:15:21,234 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 03:15:21,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 03:15:21,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 03:15:21,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 03:15:21,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 03:15:21,475 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 03:15:21,476 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 03:15:21,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2022-02-10 03:15:21,477 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2022-02-10 03:15:21,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 03:15:21,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 03:15:21,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 03:15:21,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 03:15:21,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 03:15:21,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,524 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 03:15:21,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 03:15:21,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 03:15:21,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 03:15:21,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 03:15:21,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 03:15:21,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 03:15:21,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 03:15:21,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 03:15:21,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/1) ... [2022-02-10 03:15:21,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 03:15:21,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:21,579 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 03:15:21,602 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 03:15:21,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 03:15:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 03:15:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 03:15:21,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 03:15:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 03:15:21,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 03:15:21,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 03:15:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 03:15:21,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 03:15:21,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-10 03:15:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 03:15:21,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 03:15:21,625 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 03:15:21,675 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 03:15:21,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 03:15:21,881 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 03:15:21,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 03:15:21,950 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 03:15:21,957 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:15:21 BoogieIcfgContainer [2022-02-10 03:15:21,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 03:15:21,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 03:15:21,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 03:15:21,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 03:15:21,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 03:15:21" (1/2) ... [2022-02-10 03:15:21,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b50d924 and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 03:15:21, skipping insertion in model container [2022-02-10 03:15:21,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 03:15:21" (2/2) ... [2022-02-10 03:15:21,974 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2022-02-10 03:15:21,978 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 03:15:21,978 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 03:15:21,979 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 03:15:21,979 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 03:15:22,027 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 03:15:22,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 03:15:22,070 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 03:15:22,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 03:15:22,082 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2022-02-10 03:15:22,123 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 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 03:15:26,250 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 206351 transitions and produced 97401 states. [2022-02-10 03:15:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 97401 states, 62538 states have (on average 1.8115705650964213) internal successors, (113292), 97400 states have internal predecessors, (113292), 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 03:15:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:27,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:27,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:27,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1179014397, now seen corresponding path program 1 times [2022-02-10 03:15:27,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:27,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140112253] [2022-02-10 03:15:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:27,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:27,962 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 03:15:27,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:27,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140112253] [2022-02-10 03:15:27,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140112253] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:27,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:27,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:27,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082461267] [2022-02-10 03:15:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:27,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:27,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:28,944 INFO L87 Difference]: Start difference. First operand has 97401 states, 62538 states have (on average 1.8115705650964213) internal successors, (113292), 97400 states have internal predecessors, (113292), 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:31,033 INFO L93 Difference]: Finished difference Result 97399 states and 113290 transitions. [2022-02-10 03:15:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:31,289 INFO L225 Difference]: With dead ends: 97399 [2022-02-10 03:15:31,289 INFO L226 Difference]: Without dead ends: 39896 [2022-02-10 03:15:31,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:31,294 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:31,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:15:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39896 states. [2022-02-10 03:15:31,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39896 to 80. [2022-02-10 03:15:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.2658227848101267) internal successors, (179), 79 states have internal predecessors, (179), 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 03:15:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 179 transitions. [2022-02-10 03:15:31,714 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 179 transitions. Word has length 14 [2022-02-10 03:15:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:31,716 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 179 transitions. [2022-02-10 03:15:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 179 transitions. [2022-02-10 03:15:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:31,719 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:31,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:31,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 03:15:31,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 815450759, now seen corresponding path program 2 times [2022-02-10 03:15:31,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:31,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589547026] [2022-02-10 03:15:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:31,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:31,826 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 03:15:31,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:31,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589547026] [2022-02-10 03:15:31,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589547026] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:31,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:31,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:31,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098492071] [2022-02-10 03:15:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:31,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:31,830 INFO L87 Difference]: Start difference. First operand 80 states and 179 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:32,063 INFO L93 Difference]: Finished difference Result 133 states and 253 transitions. [2022-02-10 03:15:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:32,064 INFO L225 Difference]: With dead ends: 133 [2022-02-10 03:15:32,064 INFO L226 Difference]: Without dead ends: 127 [2022-02-10 03:15:32,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:32,068 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:32,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-02-10 03:15:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81. [2022-02-10 03:15:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.25) internal successors, (180), 80 states have internal predecessors, (180), 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 03:15:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 180 transitions. [2022-02-10 03:15:32,082 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 180 transitions. Word has length 14 [2022-02-10 03:15:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:32,082 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 180 transitions. [2022-02-10 03:15:32,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 180 transitions. [2022-02-10 03:15:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:32,084 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:32,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:32,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 03:15:32,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -53413497, now seen corresponding path program 3 times [2022-02-10 03:15:32,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:32,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004329789] [2022-02-10 03:15:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:32,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:32,166 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 03:15:32,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:32,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004329789] [2022-02-10 03:15:32,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004329789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:32,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:32,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:32,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650059715] [2022-02-10 03:15:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:32,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:32,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:32,171 INFO L87 Difference]: Start difference. First operand 81 states and 180 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:32,273 INFO L93 Difference]: Finished difference Result 131 states and 245 transitions. [2022-02-10 03:15:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:32,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:32,274 INFO L225 Difference]: With dead ends: 131 [2022-02-10 03:15:32,274 INFO L226 Difference]: Without dead ends: 126 [2022-02-10 03:15:32,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:32,275 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:32,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-10 03:15:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 82. [2022-02-10 03:15:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.234567901234568) internal successors, (181), 81 states have internal predecessors, (181), 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 03:15:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 181 transitions. [2022-02-10 03:15:32,279 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 181 transitions. Word has length 14 [2022-02-10 03:15:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:32,279 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 181 transitions. [2022-02-10 03:15:32,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 181 transitions. [2022-02-10 03:15:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:32,280 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:32,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:32,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 03:15:32,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:32,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash -828607161, now seen corresponding path program 4 times [2022-02-10 03:15:32,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:32,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519889311] [2022-02-10 03:15:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:32,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:32,345 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 03:15:32,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:32,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519889311] [2022-02-10 03:15:32,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519889311] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:32,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:32,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:32,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127514639] [2022-02-10 03:15:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:32,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:32,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:32,348 INFO L87 Difference]: Start difference. First operand 82 states and 181 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:32,461 INFO L93 Difference]: Finished difference Result 132 states and 254 transitions. [2022-02-10 03:15:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:32,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:32,462 INFO L225 Difference]: With dead ends: 132 [2022-02-10 03:15:32,462 INFO L226 Difference]: Without dead ends: 126 [2022-02-10 03:15:32,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:32,463 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:32,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 24 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-10 03:15:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 84. [2022-02-10 03:15:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.216867469879518) internal successors, (184), 83 states have internal predecessors, (184), 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 03:15:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 184 transitions. [2022-02-10 03:15:32,467 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 184 transitions. Word has length 14 [2022-02-10 03:15:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:32,471 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 184 transitions. [2022-02-10 03:15:32,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 184 transitions. [2022-02-10 03:15:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:32,472 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:32,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:32,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 03:15:32,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1993567179, now seen corresponding path program 5 times [2022-02-10 03:15:32,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:32,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041641875] [2022-02-10 03:15:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:32,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:32,562 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 03:15:32,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:32,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041641875] [2022-02-10 03:15:32,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041641875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:32,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:32,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:32,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719881758] [2022-02-10 03:15:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:32,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:32,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:32,564 INFO L87 Difference]: Start difference. First operand 84 states and 184 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:32,679 INFO L93 Difference]: Finished difference Result 140 states and 264 transitions. [2022-02-10 03:15:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:32,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:32,680 INFO L225 Difference]: With dead ends: 140 [2022-02-10 03:15:32,680 INFO L226 Difference]: Without dead ends: 134 [2022-02-10 03:15:32,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:32,681 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:32,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 26 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-10 03:15:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 85. [2022-02-10 03:15:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.2023809523809526) internal successors, (185), 84 states have internal predecessors, (185), 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 03:15:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 185 transitions. [2022-02-10 03:15:32,689 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 185 transitions. Word has length 14 [2022-02-10 03:15:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:32,689 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 185 transitions. [2022-02-10 03:15:32,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 185 transitions. [2022-02-10 03:15:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-10 03:15:32,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:32,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:32,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 03:15:32,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:32,691 INFO L85 PathProgramCache]: Analyzing trace with hash -602522425, now seen corresponding path program 6 times [2022-02-10 03:15:32,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:32,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005170473] [2022-02-10 03:15:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:32,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:32,762 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 03:15:32,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:32,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005170473] [2022-02-10 03:15:32,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005170473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:32,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:32,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:32,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612609334] [2022-02-10 03:15:32,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:32,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:32,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:32,764 INFO L87 Difference]: Start difference. First operand 85 states and 185 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:32,879 INFO L93 Difference]: Finished difference Result 136 states and 257 transitions. [2022-02-10 03:15:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:32,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:32,880 INFO L225 Difference]: With dead ends: 136 [2022-02-10 03:15:32,880 INFO L226 Difference]: Without dead ends: 129 [2022-02-10 03:15:32,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:32,881 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:32,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-10 03:15:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 85. [2022-02-10 03:15:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.1904761904761907) internal successors, (184), 84 states have internal predecessors, (184), 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 03:15:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 184 transitions. [2022-02-10 03:15:32,885 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 184 transitions. Word has length 14 [2022-02-10 03:15:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:32,885 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 184 transitions. [2022-02-10 03:15:32,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 03:15:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 184 transitions. [2022-02-10 03:15:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:32,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:32,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:32,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 03:15:32,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:32,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1069536346, now seen corresponding path program 1 times [2022-02-10 03:15:32,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:32,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812854841] [2022-02-10 03:15:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:32,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:32,944 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 03:15:32,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:32,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812854841] [2022-02-10 03:15:32,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812854841] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:32,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:32,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:32,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178388609] [2022-02-10 03:15:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:32,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:32,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:32,946 INFO L87 Difference]: Start difference. First operand 85 states and 184 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,040 INFO L93 Difference]: Finished difference Result 126 states and 234 transitions. [2022-02-10 03:15:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,041 INFO L225 Difference]: With dead ends: 126 [2022-02-10 03:15:33,041 INFO L226 Difference]: Without dead ends: 118 [2022-02-10 03:15:33,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,042 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 22 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-10 03:15:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2022-02-10 03:15:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.1785714285714284) internal successors, (183), 84 states have internal predecessors, (183), 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 03:15:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 183 transitions. [2022-02-10 03:15:33,045 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 183 transitions. Word has length 15 [2022-02-10 03:15:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,045 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 183 transitions. [2022-02-10 03:15:33,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 183 transitions. [2022-02-10 03:15:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 03:15:33,046 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1429214202, now seen corresponding path program 1 times [2022-02-10 03:15:33,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102941789] [2022-02-10 03:15:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,132 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 03:15:33,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102941789] [2022-02-10 03:15:33,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102941789] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790090268] [2022-02-10 03:15:33,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,134 INFO L87 Difference]: Start difference. First operand 85 states and 183 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,247 INFO L93 Difference]: Finished difference Result 131 states and 246 transitions. [2022-02-10 03:15:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,249 INFO L225 Difference]: With dead ends: 131 [2022-02-10 03:15:33,249 INFO L226 Difference]: Without dead ends: 126 [2022-02-10 03:15:33,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,250 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-10 03:15:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 86. [2022-02-10 03:15:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.1882352941176473) internal successors, (186), 85 states have internal predecessors, (186), 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 03:15:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2022-02-10 03:15:33,253 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 15 [2022-02-10 03:15:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,254 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2022-02-10 03:15:33,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2022-02-10 03:15:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 03:15:33,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash -956598896, now seen corresponding path program 2 times [2022-02-10 03:15:33,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660602697] [2022-02-10 03:15:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,336 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 03:15:33,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660602697] [2022-02-10 03:15:33,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660602697] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,337 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064084718] [2022-02-10 03:15:33,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,339 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,441 INFO L93 Difference]: Finished difference Result 132 states and 247 transitions. [2022-02-10 03:15:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,442 INFO L225 Difference]: With dead ends: 132 [2022-02-10 03:15:33,442 INFO L226 Difference]: Without dead ends: 124 [2022-02-10 03:15:33,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,443 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 20 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-10 03:15:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2022-02-10 03:15:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.176470588235294) internal successors, (185), 85 states have internal predecessors, (185), 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 03:15:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 185 transitions. [2022-02-10 03:15:33,446 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 185 transitions. Word has length 15 [2022-02-10 03:15:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,446 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 185 transitions. [2022-02-10 03:15:33,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 185 transitions. [2022-02-10 03:15:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 03:15:33,447 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 829090198, now seen corresponding path program 2 times [2022-02-10 03:15:33,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102339368] [2022-02-10 03:15:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,499 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 03:15:33,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102339368] [2022-02-10 03:15:33,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102339368] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,500 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059816683] [2022-02-10 03:15:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,501 INFO L87 Difference]: Start difference. First operand 86 states and 185 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,597 INFO L93 Difference]: Finished difference Result 133 states and 251 transitions. [2022-02-10 03:15:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,598 INFO L225 Difference]: With dead ends: 133 [2022-02-10 03:15:33,598 INFO L226 Difference]: Without dead ends: 126 [2022-02-10 03:15:33,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,599 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-10 03:15:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 87. [2022-02-10 03:15:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.1627906976744184) internal successors, (186), 86 states have internal predecessors, (186), 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 03:15:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 186 transitions. [2022-02-10 03:15:33,602 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 186 transitions. Word has length 15 [2022-02-10 03:15:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,602 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 186 transitions. [2022-02-10 03:15:33,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 186 transitions. [2022-02-10 03:15:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,603 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 03:15:33,603 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1674795675, now seen corresponding path program 1 times [2022-02-10 03:15:33,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245395797] [2022-02-10 03:15:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,635 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 03:15:33,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245395797] [2022-02-10 03:15:33,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245395797] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144905143] [2022-02-10 03:15:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,637 INFO L87 Difference]: Start difference. First operand 87 states and 186 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,713 INFO L93 Difference]: Finished difference Result 136 states and 251 transitions. [2022-02-10 03:15:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,714 INFO L225 Difference]: With dead ends: 136 [2022-02-10 03:15:33,714 INFO L226 Difference]: Without dead ends: 131 [2022-02-10 03:15:33,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,715 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 27 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-10 03:15:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 87. [2022-02-10 03:15:33,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.1627906976744184) internal successors, (186), 86 states have internal predecessors, (186), 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 03:15:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 186 transitions. [2022-02-10 03:15:33,718 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 186 transitions. Word has length 15 [2022-02-10 03:15:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,718 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 186 transitions. [2022-02-10 03:15:33,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 186 transitions. [2022-02-10 03:15:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 03:15:33,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -625706465, now seen corresponding path program 2 times [2022-02-10 03:15:33,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165566401] [2022-02-10 03:15:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,759 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 03:15:33,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165566401] [2022-02-10 03:15:33,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165566401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,760 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651039298] [2022-02-10 03:15:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,761 INFO L87 Difference]: Start difference. First operand 87 states and 186 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,843 INFO L93 Difference]: Finished difference Result 168 states and 301 transitions. [2022-02-10 03:15:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,844 INFO L225 Difference]: With dead ends: 168 [2022-02-10 03:15:33,844 INFO L226 Difference]: Without dead ends: 162 [2022-02-10 03:15:33,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,845 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 42 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-02-10 03:15:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 87. [2022-02-10 03:15:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.1627906976744184) internal successors, (186), 86 states have internal predecessors, (186), 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 03:15:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 186 transitions. [2022-02-10 03:15:33,848 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 186 transitions. Word has length 15 [2022-02-10 03:15:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,848 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 186 transitions. [2022-02-10 03:15:33,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 186 transitions. [2022-02-10 03:15:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 03:15:33,849 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1603425878, now seen corresponding path program 3 times [2022-02-10 03:15:33,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589372493] [2022-02-10 03:15:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:33,909 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 03:15:33,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:33,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589372493] [2022-02-10 03:15:33,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589372493] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:33,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:33,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:33,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372964132] [2022-02-10 03:15:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:33,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:33,910 INFO L87 Difference]: Start difference. First operand 87 states and 186 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:33,982 INFO L93 Difference]: Finished difference Result 133 states and 244 transitions. [2022-02-10 03:15:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:33,983 INFO L225 Difference]: With dead ends: 133 [2022-02-10 03:15:33,983 INFO L226 Difference]: Without dead ends: 124 [2022-02-10 03:15:33,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:33,984 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:33,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 20 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-10 03:15:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2022-02-10 03:15:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.164705882352941) internal successors, (184), 85 states have internal predecessors, (184), 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 03:15:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 184 transitions. [2022-02-10 03:15:33,988 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 184 transitions. Word has length 15 [2022-02-10 03:15:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 184 transitions. [2022-02-10 03:15:33,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 184 transitions. [2022-02-10 03:15:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:33,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:33,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:33,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 03:15:33,989 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1874022735, now seen corresponding path program 3 times [2022-02-10 03:15:33,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:33,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637465714] [2022-02-10 03:15:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:33,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,042 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 03:15:34,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637465714] [2022-02-10 03:15:34,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637465714] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,043 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618184957] [2022-02-10 03:15:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,044 INFO L87 Difference]: Start difference. First operand 86 states and 184 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,131 INFO L93 Difference]: Finished difference Result 137 states and 253 transitions. [2022-02-10 03:15:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,132 INFO L225 Difference]: With dead ends: 137 [2022-02-10 03:15:34,132 INFO L226 Difference]: Without dead ends: 132 [2022-02-10 03:15:34,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,133 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-10 03:15:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2022-02-10 03:15:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.160919540229885) internal successors, (188), 87 states have internal predecessors, (188), 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 03:15:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 188 transitions. [2022-02-10 03:15:34,137 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 188 transitions. Word has length 15 [2022-02-10 03:15:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,137 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 188 transitions. [2022-02-10 03:15:34,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 188 transitions. [2022-02-10 03:15:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-10 03:15:34,138 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash -525337973, now seen corresponding path program 4 times [2022-02-10 03:15:34,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597015869] [2022-02-10 03:15:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,204 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 03:15:34,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597015869] [2022-02-10 03:15:34,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597015869] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119650163] [2022-02-10 03:15:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,205 INFO L87 Difference]: Start difference. First operand 88 states and 188 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,285 INFO L93 Difference]: Finished difference Result 124 states and 239 transitions. [2022-02-10 03:15:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,286 INFO L225 Difference]: With dead ends: 124 [2022-02-10 03:15:34,286 INFO L226 Difference]: Without dead ends: 116 [2022-02-10 03:15:34,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,289 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-10 03:15:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2022-02-10 03:15:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.1627906976744184) internal successors, (186), 86 states have internal predecessors, (186), 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 03:15:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 186 transitions. [2022-02-10 03:15:34,292 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 186 transitions. Word has length 15 [2022-02-10 03:15:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,292 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 186 transitions. [2022-02-10 03:15:34,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 186 transitions. [2022-02-10 03:15:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-10 03:15:34,293 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1402902230, now seen corresponding path program 4 times [2022-02-10 03:15:34,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022349696] [2022-02-10 03:15:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,344 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 03:15:34,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022349696] [2022-02-10 03:15:34,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022349696] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749261054] [2022-02-10 03:15:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,348 INFO L87 Difference]: Start difference. First operand 87 states and 186 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,490 INFO L93 Difference]: Finished difference Result 132 states and 249 transitions. [2022-02-10 03:15:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,492 INFO L225 Difference]: With dead ends: 132 [2022-02-10 03:15:34,492 INFO L226 Difference]: Without dead ends: 125 [2022-02-10 03:15:34,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,492 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-10 03:15:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2022-02-10 03:15:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.1494252873563218) internal successors, (187), 87 states have internal predecessors, (187), 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 03:15:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 187 transitions. [2022-02-10 03:15:34,495 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 187 transitions. Word has length 15 [2022-02-10 03:15:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,495 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 187 transitions. [2022-02-10 03:15:34,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 187 transitions. [2022-02-10 03:15:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,495 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-10 03:15:34,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2006267338, now seen corresponding path program 3 times [2022-02-10 03:15:34,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817021324] [2022-02-10 03:15:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,529 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 03:15:34,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817021324] [2022-02-10 03:15:34,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817021324] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925200512] [2022-02-10 03:15:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,531 INFO L87 Difference]: Start difference. First operand 88 states and 187 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,616 INFO L93 Difference]: Finished difference Result 138 states and 254 transitions. [2022-02-10 03:15:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,617 INFO L225 Difference]: With dead ends: 138 [2022-02-10 03:15:34,617 INFO L226 Difference]: Without dead ends: 133 [2022-02-10 03:15:34,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,619 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-10 03:15:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2022-02-10 03:15:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.1363636363636362) internal successors, (188), 88 states have internal predecessors, (188), 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 03:15:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 188 transitions. [2022-02-10 03:15:34,622 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 188 transitions. Word has length 15 [2022-02-10 03:15:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,622 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 188 transitions. [2022-02-10 03:15:34,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 188 transitions. [2022-02-10 03:15:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,624 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-10 03:15:34,625 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1624350790, now seen corresponding path program 4 times [2022-02-10 03:15:34,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622607188] [2022-02-10 03:15:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,668 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 03:15:34,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622607188] [2022-02-10 03:15:34,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622607188] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001340587] [2022-02-10 03:15:34,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,671 INFO L87 Difference]: Start difference. First operand 89 states and 188 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,760 INFO L93 Difference]: Finished difference Result 158 states and 284 transitions. [2022-02-10 03:15:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:34,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,761 INFO L225 Difference]: With dead ends: 158 [2022-02-10 03:15:34,761 INFO L226 Difference]: Without dead ends: 152 [2022-02-10 03:15:34,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,762 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-02-10 03:15:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 89. [2022-02-10 03:15:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.125) internal successors, (187), 88 states have internal predecessors, (187), 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 03:15:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 187 transitions. [2022-02-10 03:15:34,765 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 187 transitions. Word has length 15 [2022-02-10 03:15:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,765 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 187 transitions. [2022-02-10 03:15:34,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 187 transitions. [2022-02-10 03:15:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-10 03:15:34,766 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1205271756, now seen corresponding path program 5 times [2022-02-10 03:15:34,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430110344] [2022-02-10 03:15:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,803 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 03:15:34,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430110344] [2022-02-10 03:15:34,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430110344] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012695136] [2022-02-10 03:15:34,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,805 INFO L87 Difference]: Start difference. First operand 89 states and 187 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:34,880 INFO L93 Difference]: Finished difference Result 142 states and 263 transitions. [2022-02-10 03:15:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:34,880 INFO L225 Difference]: With dead ends: 142 [2022-02-10 03:15:34,880 INFO L226 Difference]: Without dead ends: 133 [2022-02-10 03:15:34,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:34,881 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:34,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 23 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-02-10 03:15:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 88. [2022-02-10 03:15:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.1264367816091956) internal successors, (185), 87 states have internal predecessors, (185), 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 03:15:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2022-02-10 03:15:34,884 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 15 [2022-02-10 03:15:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:34,884 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2022-02-10 03:15:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2022-02-10 03:15:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:34,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:34,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:34,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-10 03:15:34,885 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:34,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1213193739, now seen corresponding path program 5 times [2022-02-10 03:15:34,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:34,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209074923] [2022-02-10 03:15:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:34,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:34,918 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 03:15:34,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:34,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209074923] [2022-02-10 03:15:34,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209074923] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:34,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:34,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:34,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29377257] [2022-02-10 03:15:34,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:34,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:34,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:34,920 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,018 INFO L93 Difference]: Finished difference Result 137 states and 250 transitions. [2022-02-10 03:15:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,018 INFO L225 Difference]: With dead ends: 137 [2022-02-10 03:15:35,019 INFO L226 Difference]: Without dead ends: 131 [2022-02-10 03:15:35,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:35,019 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-02-10 03:15:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 87. [2022-02-10 03:15:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.127906976744186) internal successors, (183), 86 states have internal predecessors, (183), 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 03:15:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2022-02-10 03:15:35,022 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 15 [2022-02-10 03:15:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,022 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2022-02-10 03:15:35,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2022-02-10 03:15:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:35,023 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-10 03:15:35,023 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 267431733, now seen corresponding path program 6 times [2022-02-10 03:15:35,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442083237] [2022-02-10 03:15:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,061 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 03:15:35,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442083237] [2022-02-10 03:15:35,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442083237] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:35,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834816654] [2022-02-10 03:15:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:35,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,063 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,135 INFO L93 Difference]: Finished difference Result 127 states and 242 transitions. [2022-02-10 03:15:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,136 INFO L225 Difference]: With dead ends: 127 [2022-02-10 03:15:35,136 INFO L226 Difference]: Without dead ends: 118 [2022-02-10 03:15:35,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:35,137 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 21 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-02-10 03:15:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2022-02-10 03:15:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 85 states have internal predecessors, (181), 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 03:15:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 181 transitions. [2022-02-10 03:15:35,139 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 181 transitions. Word has length 15 [2022-02-10 03:15:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,140 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 181 transitions. [2022-02-10 03:15:35,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 181 transitions. [2022-02-10 03:15:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:35,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-10 03:15:35,142 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1953591536, now seen corresponding path program 6 times [2022-02-10 03:15:35,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98636580] [2022-02-10 03:15:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,180 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 03:15:35,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98636580] [2022-02-10 03:15:35,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98636580] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:35,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100085872] [2022-02-10 03:15:35,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:35,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,181 INFO L87 Difference]: Start difference. First operand 86 states and 181 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,292 INFO L93 Difference]: Finished difference Result 138 states and 252 transitions. [2022-02-10 03:15:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,293 INFO L225 Difference]: With dead ends: 138 [2022-02-10 03:15:35,293 INFO L226 Difference]: Without dead ends: 130 [2022-02-10 03:15:35,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:35,293 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-10 03:15:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2022-02-10 03:15:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.1176470588235294) internal successors, (180), 85 states have internal predecessors, (180), 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 03:15:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 180 transitions. [2022-02-10 03:15:35,296 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 180 transitions. Word has length 15 [2022-02-10 03:15:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 180 transitions. [2022-02-10 03:15:35,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 180 transitions. [2022-02-10 03:15:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:35,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-10 03:15:35,297 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash -978410222, now seen corresponding path program 5 times [2022-02-10 03:15:35,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624461830] [2022-02-10 03:15:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,330 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 03:15:35,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624461830] [2022-02-10 03:15:35,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624461830] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:35,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647042324] [2022-02-10 03:15:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:35,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,332 INFO L87 Difference]: Start difference. First operand 86 states and 180 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,414 INFO L93 Difference]: Finished difference Result 128 states and 237 transitions. [2022-02-10 03:15:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,415 INFO L225 Difference]: With dead ends: 128 [2022-02-10 03:15:35,415 INFO L226 Difference]: Without dead ends: 121 [2022-02-10 03:15:35,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:35,416 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 25 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-02-10 03:15:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 87. [2022-02-10 03:15:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.104651162790698) internal successors, (181), 86 states have internal predecessors, (181), 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 03:15:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 181 transitions. [2022-02-10 03:15:35,419 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 181 transitions. Word has length 15 [2022-02-10 03:15:35,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,419 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 181 transitions. [2022-02-10 03:15:35,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 181 transitions. [2022-02-10 03:15:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 03:15:35,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-10 03:15:35,420 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 147190678, now seen corresponding path program 6 times [2022-02-10 03:15:35,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616578442] [2022-02-10 03:15:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,452 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 03:15:35,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616578442] [2022-02-10 03:15:35,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616578442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 03:15:35,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108790041] [2022-02-10 03:15:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 03:15:35,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 03:15:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,454 INFO L87 Difference]: Start difference. First operand 87 states and 181 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,542 INFO L93 Difference]: Finished difference Result 130 states and 243 transitions. [2022-02-10 03:15:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-02-10 03:15:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,543 INFO L225 Difference]: With dead ends: 130 [2022-02-10 03:15:35,544 INFO L226 Difference]: Without dead ends: 122 [2022-02-10 03:15:35,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:35,544 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 30 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-10 03:15:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2022-02-10 03:15:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 86 states have internal predecessors, (180), 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 03:15:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2022-02-10 03:15:35,547 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 15 [2022-02-10 03:15:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,547 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2022-02-10 03:15:35,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 03:15:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2022-02-10 03:15:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-10 03:15:35,548 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 320244291, now seen corresponding path program 1 times [2022-02-10 03:15:35,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244180225] [2022-02-10 03:15:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,567 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 03:15:35,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244180225] [2022-02-10 03:15:35,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244180225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326811713] [2022-02-10 03:15:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,569 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,628 INFO L93 Difference]: Finished difference Result 138 states and 248 transitions. [2022-02-10 03:15:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,629 INFO L225 Difference]: With dead ends: 138 [2022-02-10 03:15:35,629 INFO L226 Difference]: Without dead ends: 134 [2022-02-10 03:15:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,630 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-10 03:15:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 86. [2022-02-10 03:15:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 85 states have internal predecessors, (177), 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 03:15:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 177 transitions. [2022-02-10 03:15:35,633 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 177 transitions. Word has length 16 [2022-02-10 03:15:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,633 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 177 transitions. [2022-02-10 03:15:35,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 177 transitions. [2022-02-10 03:15:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-10 03:15:35,634 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1995114861, now seen corresponding path program 2 times [2022-02-10 03:15:35,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880948056] [2022-02-10 03:15:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,650 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 03:15:35,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880948056] [2022-02-10 03:15:35,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880948056] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739081470] [2022-02-10 03:15:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,652 INFO L87 Difference]: Start difference. First operand 86 states and 177 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,701 INFO L93 Difference]: Finished difference Result 139 states and 250 transitions. [2022-02-10 03:15:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,701 INFO L225 Difference]: With dead ends: 139 [2022-02-10 03:15:35,701 INFO L226 Difference]: Without dead ends: 134 [2022-02-10 03:15:35,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,702 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-02-10 03:15:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 82. [2022-02-10 03:15:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.111111111111111) internal successors, (171), 81 states have internal predecessors, (171), 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 03:15:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 171 transitions. [2022-02-10 03:15:35,705 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 171 transitions. Word has length 16 [2022-02-10 03:15:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,705 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 171 transitions. [2022-02-10 03:15:35,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 171 transitions. [2022-02-10 03:15:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-10 03:15:35,706 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash -656664638, now seen corresponding path program 1 times [2022-02-10 03:15:35,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163167656] [2022-02-10 03:15:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,720 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 03:15:35,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163167656] [2022-02-10 03:15:35,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163167656] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035332912] [2022-02-10 03:15:35,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,722 INFO L87 Difference]: Start difference. First operand 82 states and 171 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,762 INFO L93 Difference]: Finished difference Result 121 states and 219 transitions. [2022-02-10 03:15:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,762 INFO L225 Difference]: With dead ends: 121 [2022-02-10 03:15:35,763 INFO L226 Difference]: Without dead ends: 112 [2022-02-10 03:15:35,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,763 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 16 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-10 03:15:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2022-02-10 03:15:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.108108108108108) internal successors, (156), 74 states have internal predecessors, (156), 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 03:15:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 156 transitions. [2022-02-10 03:15:35,766 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 156 transitions. Word has length 16 [2022-02-10 03:15:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,766 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 156 transitions. [2022-02-10 03:15:35,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 156 transitions. [2022-02-10 03:15:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-10 03:15:35,767 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash -296986782, now seen corresponding path program 1 times [2022-02-10 03:15:35,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943086075] [2022-02-10 03:15:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,781 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 03:15:35,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943086075] [2022-02-10 03:15:35,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943086075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595419669] [2022-02-10 03:15:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,783 INFO L87 Difference]: Start difference. First operand 75 states and 156 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,828 INFO L93 Difference]: Finished difference Result 113 states and 208 transitions. [2022-02-10 03:15:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,829 INFO L225 Difference]: With dead ends: 113 [2022-02-10 03:15:35,829 INFO L226 Difference]: Without dead ends: 113 [2022-02-10 03:15:35,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,830 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 20 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-10 03:15:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 73. [2022-02-10 03:15:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 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 03:15:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 154 transitions. [2022-02-10 03:15:35,832 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 154 transitions. Word has length 16 [2022-02-10 03:15:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,832 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 154 transitions. [2022-02-10 03:15:35,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 154 transitions. [2022-02-10 03:15:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-10 03:15:35,833 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 999114348, now seen corresponding path program 2 times [2022-02-10 03:15:35,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021149621] [2022-02-10 03:15:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,857 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 03:15:35,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021149621] [2022-02-10 03:15:35,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021149621] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231010620] [2022-02-10 03:15:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,859 INFO L87 Difference]: Start difference. First operand 73 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,910 INFO L93 Difference]: Finished difference Result 107 states and 199 transitions. [2022-02-10 03:15:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:35,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,911 INFO L225 Difference]: With dead ends: 107 [2022-02-10 03:15:35,911 INFO L226 Difference]: Without dead ends: 101 [2022-02-10 03:15:35,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,915 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-02-10 03:15:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2022-02-10 03:15:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 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 03:15:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 152 transitions. [2022-02-10 03:15:35,917 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 152 transitions. Word has length 16 [2022-02-10 03:15:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 152 transitions. [2022-02-10 03:15:35,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 152 transitions. [2022-02-10 03:15:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-10 03:15:35,918 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1194498951, now seen corresponding path program 3 times [2022-02-10 03:15:35,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100826334] [2022-02-10 03:15:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:35,934 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 03:15:35,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:35,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100826334] [2022-02-10 03:15:35,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100826334] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:35,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:35,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:35,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42450392] [2022-02-10 03:15:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:35,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:35,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:35,936 INFO L87 Difference]: Start difference. First operand 72 states and 152 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:35,980 INFO L93 Difference]: Finished difference Result 105 states and 194 transitions. [2022-02-10 03:15:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:15:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:35,981 INFO L225 Difference]: With dead ends: 105 [2022-02-10 03:15:35,981 INFO L226 Difference]: Without dead ends: 99 [2022-02-10 03:15:35,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:35,982 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:35,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 18 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-02-10 03:15:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2022-02-10 03:15:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.1176470588235294) internal successors, (144), 68 states have internal predecessors, (144), 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 03:15:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 144 transitions. [2022-02-10 03:15:35,985 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 144 transitions. Word has length 16 [2022-02-10 03:15:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:35,985 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 144 transitions. [2022-02-10 03:15:35,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 144 transitions. [2022-02-10 03:15:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:35,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:35,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:35,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-10 03:15:35,986 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1261902702, now seen corresponding path program 2 times [2022-02-10 03:15:35,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:35,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864010607] [2022-02-10 03:15:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:35,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,001 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 03:15:36,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864010607] [2022-02-10 03:15:36,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864010607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:36,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337957955] [2022-02-10 03:15:36,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:36,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:36,004 INFO L87 Difference]: Start difference. First operand 69 states and 144 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,037 INFO L93 Difference]: Finished difference Result 71 states and 143 transitions. [2022-02-10 03:15:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 03:15:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,038 INFO L225 Difference]: With dead ends: 71 [2022-02-10 03:15:36,038 INFO L226 Difference]: Without dead ends: 71 [2022-02-10 03:15:36,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:36,039 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 13 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-10 03:15:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-02-10 03:15:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 60 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 03:15:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 125 transitions. [2022-02-10 03:15:36,041 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 125 transitions. Word has length 16 [2022-02-10 03:15:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 125 transitions. [2022-02-10 03:15:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 125 transitions. [2022-02-10 03:15:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-10 03:15:36,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-10 03:15:36,042 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1797176689, now seen corresponding path program 4 times [2022-02-10 03:15:36,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803628448] [2022-02-10 03:15:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,062 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 03:15:36,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803628448] [2022-02-10 03:15:36,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803628448] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 03:15:36,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181486928] [2022-02-10 03:15:36,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 03:15:36,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 03:15:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 03:15:36,063 INFO L87 Difference]: Start difference. First operand 61 states and 125 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,093 INFO L93 Difference]: Finished difference Result 63 states and 125 transitions. [2022-02-10 03:15:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 03:15:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-02-10 03:15:36,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,094 INFO L225 Difference]: With dead ends: 63 [2022-02-10 03:15:36,094 INFO L226 Difference]: Without dead ends: 60 [2022-02-10 03:15:36,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 03:15:36,095 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-02-10 03:15:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-02-10 03:15:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 59 states have internal predecessors, (122), 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 03:15:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 122 transitions. [2022-02-10 03:15:36,097 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 122 transitions. Word has length 16 [2022-02-10 03:15:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 122 transitions. [2022-02-10 03:15:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 03:15:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 122 transitions. [2022-02-10 03:15:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:36,097 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-10 03:15:36,098 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1652378661, now seen corresponding path program 1 times [2022-02-10 03:15:36,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240641536] [2022-02-10 03:15:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,141 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 03:15:36,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240641536] [2022-02-10 03:15:36,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240641536] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:36,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243497889] [2022-02-10 03:15:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:36,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:36,143 INFO L87 Difference]: Start difference. First operand 60 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,266 INFO L93 Difference]: Finished difference Result 129 states and 249 transitions. [2022-02-10 03:15:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,267 INFO L225 Difference]: With dead ends: 129 [2022-02-10 03:15:36,267 INFO L226 Difference]: Without dead ends: 124 [2022-02-10 03:15:36,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:36,267 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 81 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 38 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-02-10 03:15:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 67. [2022-02-10 03:15:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 03:15:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 135 transitions. [2022-02-10 03:15:36,270 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 135 transitions. Word has length 17 [2022-02-10 03:15:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,270 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 135 transitions. [2022-02-10 03:15:36,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 135 transitions. [2022-02-10 03:15:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:36,270 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-10 03:15:36,271 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -565253413, now seen corresponding path program 2 times [2022-02-10 03:15:36,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219917404] [2022-02-10 03:15:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,324 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 03:15:36,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219917404] [2022-02-10 03:15:36,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219917404] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:36,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668798359] [2022-02-10 03:15:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:36,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:36,325 INFO L87 Difference]: Start difference. First operand 67 states and 135 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,446 INFO L93 Difference]: Finished difference Result 131 states and 251 transitions. [2022-02-10 03:15:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,447 INFO L225 Difference]: With dead ends: 131 [2022-02-10 03:15:36,447 INFO L226 Difference]: Without dead ends: 125 [2022-02-10 03:15:36,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:36,448 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 39 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-02-10 03:15:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 69. [2022-02-10 03:15:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 68 states have internal predecessors, (138), 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 03:15:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2022-02-10 03:15:36,450 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 17 [2022-02-10 03:15:36,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,450 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2022-02-10 03:15:36,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2022-02-10 03:15:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:36,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-10 03:15:36,451 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 22491909, now seen corresponding path program 3 times [2022-02-10 03:15:36,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284752472] [2022-02-10 03:15:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,515 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 03:15:36,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284752472] [2022-02-10 03:15:36,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284752472] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:36,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856526176] [2022-02-10 03:15:36,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:36,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:36,517 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,653 INFO L93 Difference]: Finished difference Result 143 states and 266 transitions. [2022-02-10 03:15:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,654 INFO L225 Difference]: With dead ends: 143 [2022-02-10 03:15:36,654 INFO L226 Difference]: Without dead ends: 137 [2022-02-10 03:15:36,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:36,655 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 92 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 41 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-02-10 03:15:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 71. [2022-02-10 03:15:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 70 states have internal predecessors, (143), 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 03:15:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2022-02-10 03:15:36,658 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 17 [2022-02-10 03:15:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,658 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2022-02-10 03:15:36,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2022-02-10 03:15:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:36,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-10 03:15:36,659 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1842935065, now seen corresponding path program 4 times [2022-02-10 03:15:36,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304763633] [2022-02-10 03:15:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,714 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 03:15:36,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304763633] [2022-02-10 03:15:36,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304763633] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:36,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462515196] [2022-02-10 03:15:36,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:36,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:36,716 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:36,853 INFO L93 Difference]: Finished difference Result 135 states and 258 transitions. [2022-02-10 03:15:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:36,854 INFO L225 Difference]: With dead ends: 135 [2022-02-10 03:15:36,854 INFO L226 Difference]: Without dead ends: 130 [2022-02-10 03:15:36,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:36,854 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 68 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:36,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 42 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-10 03:15:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 72. [2022-02-10 03:15:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.028169014084507) internal successors, (144), 71 states have internal predecessors, (144), 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 03:15:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 144 transitions. [2022-02-10 03:15:36,857 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 144 transitions. Word has length 17 [2022-02-10 03:15:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:36,857 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 144 transitions. [2022-02-10 03:15:36,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 144 transitions. [2022-02-10 03:15:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:36,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:36,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:36,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-10 03:15:36,858 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 516876443, now seen corresponding path program 5 times [2022-02-10 03:15:36,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:36,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144340373] [2022-02-10 03:15:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:36,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:36,904 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 03:15:36,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:36,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144340373] [2022-02-10 03:15:36,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144340373] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:36,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:36,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:36,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138446398] [2022-02-10 03:15:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:36,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:36,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:36,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:36,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:36,906 INFO L87 Difference]: Start difference. First operand 72 states and 144 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,027 INFO L93 Difference]: Finished difference Result 165 states and 312 transitions. [2022-02-10 03:15:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,028 INFO L225 Difference]: With dead ends: 165 [2022-02-10 03:15:37,028 INFO L226 Difference]: Without dead ends: 160 [2022-02-10 03:15:37,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:37,029 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 42 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-10 03:15:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 75. [2022-02-10 03:15:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 74 states have internal predecessors, (151), 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 03:15:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 151 transitions. [2022-02-10 03:15:37,032 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 151 transitions. Word has length 17 [2022-02-10 03:15:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,032 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 151 transitions. [2022-02-10 03:15:37,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 151 transitions. [2022-02-10 03:15:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-10 03:15:37,033 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1560381625, now seen corresponding path program 6 times [2022-02-10 03:15:37,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724907913] [2022-02-10 03:15:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:37,089 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 03:15:37,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:37,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724907913] [2022-02-10 03:15:37,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724907913] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:37,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:37,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:37,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512019704] [2022-02-10 03:15:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:37,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:37,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:37,091 INFO L87 Difference]: Start difference. First operand 75 states and 151 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,202 INFO L93 Difference]: Finished difference Result 156 states and 304 transitions. [2022-02-10 03:15:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,203 INFO L225 Difference]: With dead ends: 156 [2022-02-10 03:15:37,203 INFO L226 Difference]: Without dead ends: 150 [2022-02-10 03:15:37,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:37,204 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 73 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 38 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-02-10 03:15:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 78. [2022-02-10 03:15:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.012987012987013) internal successors, (155), 77 states have internal predecessors, (155), 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 03:15:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 155 transitions. [2022-02-10 03:15:37,207 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 155 transitions. Word has length 17 [2022-02-10 03:15:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,207 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 155 transitions. [2022-02-10 03:15:37,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 155 transitions. [2022-02-10 03:15:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-10 03:15:37,208 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 12298169, now seen corresponding path program 7 times [2022-02-10 03:15:37,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082405179] [2022-02-10 03:15:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:37,275 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 03:15:37,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:37,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082405179] [2022-02-10 03:15:37,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082405179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:37,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:37,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:37,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296394661] [2022-02-10 03:15:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:37,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:37,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:37,278 INFO L87 Difference]: Start difference. First operand 78 states and 155 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,383 INFO L93 Difference]: Finished difference Result 170 states and 321 transitions. [2022-02-10 03:15:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,384 INFO L225 Difference]: With dead ends: 170 [2022-02-10 03:15:37,384 INFO L226 Difference]: Without dead ends: 164 [2022-02-10 03:15:37,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:37,385 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 41 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-02-10 03:15:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 81. [2022-02-10 03:15:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.025) internal successors, (162), 80 states have internal predecessors, (162), 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 03:15:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 162 transitions. [2022-02-10 03:15:37,388 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 162 transitions. Word has length 17 [2022-02-10 03:15:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,388 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 162 transitions. [2022-02-10 03:15:37,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 162 transitions. [2022-02-10 03:15:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-10 03:15:37,389 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -349683941, now seen corresponding path program 8 times [2022-02-10 03:15:37,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525732605] [2022-02-10 03:15:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:37,461 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 03:15:37,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:37,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525732605] [2022-02-10 03:15:37,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525732605] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:37,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:37,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:37,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121023048] [2022-02-10 03:15:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:37,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:37,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:37,463 INFO L87 Difference]: Start difference. First operand 81 states and 162 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,578 INFO L93 Difference]: Finished difference Result 161 states and 312 transitions. [2022-02-10 03:15:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,579 INFO L225 Difference]: With dead ends: 161 [2022-02-10 03:15:37,579 INFO L226 Difference]: Without dead ends: 154 [2022-02-10 03:15:37,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:37,580 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 43 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-10 03:15:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 82. [2022-02-10 03:15:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 81 states have internal predecessors, (163), 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 03:15:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 163 transitions. [2022-02-10 03:15:37,583 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 163 transitions. Word has length 17 [2022-02-10 03:15:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,583 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 163 transitions. [2022-02-10 03:15:37,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 163 transitions. [2022-02-10 03:15:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,584 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-10 03:15:37,584 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2100130461, now seen corresponding path program 9 times [2022-02-10 03:15:37,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238706871] [2022-02-10 03:15:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:37,641 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 03:15:37,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:37,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238706871] [2022-02-10 03:15:37,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238706871] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:37,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:37,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:37,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714352200] [2022-02-10 03:15:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:37,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:37,644 INFO L87 Difference]: Start difference. First operand 82 states and 163 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,760 INFO L93 Difference]: Finished difference Result 184 states and 337 transitions. [2022-02-10 03:15:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,762 INFO L225 Difference]: With dead ends: 184 [2022-02-10 03:15:37,762 INFO L226 Difference]: Without dead ends: 178 [2022-02-10 03:15:37,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:37,762 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 49 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-02-10 03:15:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 85. [2022-02-10 03:15:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 84 states have internal predecessors, (172), 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 03:15:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 172 transitions. [2022-02-10 03:15:37,765 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 172 transitions. Word has length 17 [2022-02-10 03:15:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,766 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 172 transitions. [2022-02-10 03:15:37,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 172 transitions. [2022-02-10 03:15:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-10 03:15:37,767 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1832854725, now seen corresponding path program 10 times [2022-02-10 03:15:37,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750719053] [2022-02-10 03:15:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:37,881 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 03:15:37,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:37,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750719053] [2022-02-10 03:15:37,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750719053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:37,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:37,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:37,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096610237] [2022-02-10 03:15:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:37,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:37,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:37,883 INFO L87 Difference]: Start difference. First operand 85 states and 172 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:37,976 INFO L93 Difference]: Finished difference Result 175 states and 328 transitions. [2022-02-10 03:15:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:37,977 INFO L225 Difference]: With dead ends: 175 [2022-02-10 03:15:37,977 INFO L226 Difference]: Without dead ends: 168 [2022-02-10 03:15:37,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:37,978 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 83 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:37,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 49 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-10 03:15:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 84. [2022-02-10 03:15:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 83 states have internal predecessors, (168), 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 03:15:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 168 transitions. [2022-02-10 03:15:37,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 168 transitions. Word has length 17 [2022-02-10 03:15:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:37,980 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 168 transitions. [2022-02-10 03:15:37,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 168 transitions. [2022-02-10 03:15:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:37,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:37,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:37,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-10 03:15:37,981 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash 266391237, now seen corresponding path program 11 times [2022-02-10 03:15:37,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:37,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583979911] [2022-02-10 03:15:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:37,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,037 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 03:15:38,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583979911] [2022-02-10 03:15:38,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583979911] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936964459] [2022-02-10 03:15:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,039 INFO L87 Difference]: Start difference. First operand 84 states and 168 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:38,160 INFO L93 Difference]: Finished difference Result 173 states and 325 transitions. [2022-02-10 03:15:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:38,161 INFO L225 Difference]: With dead ends: 173 [2022-02-10 03:15:38,161 INFO L226 Difference]: Without dead ends: 168 [2022-02-10 03:15:38,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:38,162 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:38,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 51 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-02-10 03:15:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 86. [2022-02-10 03:15:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.023529411764706) internal successors, (172), 85 states have internal predecessors, (172), 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 03:15:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 172 transitions. [2022-02-10 03:15:38,164 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 172 transitions. Word has length 17 [2022-02-10 03:15:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 172 transitions. [2022-02-10 03:15:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 172 transitions. [2022-02-10 03:15:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:38,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:38,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:38,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-10 03:15:38,165 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1175696187, now seen corresponding path program 12 times [2022-02-10 03:15:38,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:38,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24099950] [2022-02-10 03:15:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:38,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,222 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 03:15:38,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24099950] [2022-02-10 03:15:38,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24099950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635589136] [2022-02-10 03:15:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,224 INFO L87 Difference]: Start difference. First operand 86 states and 172 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:38,324 INFO L93 Difference]: Finished difference Result 164 states and 316 transitions. [2022-02-10 03:15:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:38,325 INFO L225 Difference]: With dead ends: 164 [2022-02-10 03:15:38,325 INFO L226 Difference]: Without dead ends: 158 [2022-02-10 03:15:38,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:38,326 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:38,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 50 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-10 03:15:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 86. [2022-02-10 03:15:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.023529411764706) internal successors, (172), 85 states have internal predecessors, (172), 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 03:15:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 172 transitions. [2022-02-10 03:15:38,328 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 172 transitions. Word has length 17 [2022-02-10 03:15:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 172 transitions. [2022-02-10 03:15:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 172 transitions. [2022-02-10 03:15:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:38,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:38,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:38,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-10 03:15:38,329 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:38,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash -571444913, now seen corresponding path program 13 times [2022-02-10 03:15:38,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:38,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102350267] [2022-02-10 03:15:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:38,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,377 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 03:15:38,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102350267] [2022-02-10 03:15:38,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102350267] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423413389] [2022-02-10 03:15:38,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,378 INFO L87 Difference]: Start difference. First operand 86 states and 172 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:38,493 INFO L93 Difference]: Finished difference Result 185 states and 354 transitions. [2022-02-10 03:15:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:38,493 INFO L225 Difference]: With dead ends: 185 [2022-02-10 03:15:38,493 INFO L226 Difference]: Without dead ends: 180 [2022-02-10 03:15:38,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:38,494 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 74 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:38,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 44 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-02-10 03:15:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 89. [2022-02-10 03:15:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 88 states have internal predecessors, (181), 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 03:15:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 181 transitions. [2022-02-10 03:15:38,497 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 181 transitions. Word has length 17 [2022-02-10 03:15:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:38,497 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 181 transitions. [2022-02-10 03:15:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 181 transitions. [2022-02-10 03:15:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:38,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:38,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:38,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-10 03:15:38,498 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:38,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash 515680335, now seen corresponding path program 14 times [2022-02-10 03:15:38,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:38,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679069218] [2022-02-10 03:15:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:38,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,564 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 03:15:38,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679069218] [2022-02-10 03:15:38,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679069218] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878346605] [2022-02-10 03:15:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,565 INFO L87 Difference]: Start difference. First operand 89 states and 181 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:38,670 INFO L93 Difference]: Finished difference Result 185 states and 354 transitions. [2022-02-10 03:15:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:38,671 INFO L225 Difference]: With dead ends: 185 [2022-02-10 03:15:38,671 INFO L226 Difference]: Without dead ends: 179 [2022-02-10 03:15:38,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:38,672 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 93 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 41 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-02-10 03:15:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 88. [2022-02-10 03:15:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 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 03:15:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 178 transitions. [2022-02-10 03:15:38,674 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 178 transitions. Word has length 17 [2022-02-10 03:15:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:38,675 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 178 transitions. [2022-02-10 03:15:38,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 178 transitions. [2022-02-10 03:15:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:38,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:38,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:38,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-10 03:15:38,675 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -543901647, now seen corresponding path program 15 times [2022-02-10 03:15:38,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:38,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556642508] [2022-02-10 03:15:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:38,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,735 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 03:15:38,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556642508] [2022-02-10 03:15:38,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556642508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766321384] [2022-02-10 03:15:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,736 INFO L87 Difference]: Start difference. First operand 88 states and 178 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:38,867 INFO L93 Difference]: Finished difference Result 199 states and 372 transitions. [2022-02-10 03:15:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:38,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:38,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:38,868 INFO L225 Difference]: With dead ends: 199 [2022-02-10 03:15:38,868 INFO L226 Difference]: Without dead ends: 194 [2022-02-10 03:15:38,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:38,869 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:38,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 45 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-02-10 03:15:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 89. [2022-02-10 03:15:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 88 states have internal predecessors, (181), 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 03:15:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 181 transitions. [2022-02-10 03:15:38,872 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 181 transitions. Word has length 17 [2022-02-10 03:15:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:38,872 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 181 transitions. [2022-02-10 03:15:38,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 181 transitions. [2022-02-10 03:15:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:38,873 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:38,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:38,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-10 03:15:38,873 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 499603535, now seen corresponding path program 16 times [2022-02-10 03:15:38,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:38,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010711458] [2022-02-10 03:15:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:38,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:38,929 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 03:15:38,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:38,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010711458] [2022-02-10 03:15:38,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010711458] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:38,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:38,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:38,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766628636] [2022-02-10 03:15:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:38,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:38,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:38,930 INFO L87 Difference]: Start difference. First operand 89 states and 181 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,067 INFO L93 Difference]: Finished difference Result 189 states and 363 transitions. [2022-02-10 03:15:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,068 INFO L225 Difference]: With dead ends: 189 [2022-02-10 03:15:39,068 INFO L226 Difference]: Without dead ends: 183 [2022-02-10 03:15:39,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:39,069 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 80 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 44 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-10 03:15:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 88. [2022-02-10 03:15:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 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 03:15:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 178 transitions. [2022-02-10 03:15:39,071 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 178 transitions. Word has length 17 [2022-02-10 03:15:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,072 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 178 transitions. [2022-02-10 03:15:39,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 178 transitions. [2022-02-10 03:15:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-10 03:15:39,072 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1048479921, now seen corresponding path program 17 times [2022-02-10 03:15:39,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607815125] [2022-02-10 03:15:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,128 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 03:15:39,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607815125] [2022-02-10 03:15:39,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607815125] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531291012] [2022-02-10 03:15:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,130 INFO L87 Difference]: Start difference. First operand 88 states and 178 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,236 INFO L93 Difference]: Finished difference Result 190 states and 363 transitions. [2022-02-10 03:15:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,237 INFO L225 Difference]: With dead ends: 190 [2022-02-10 03:15:39,237 INFO L226 Difference]: Without dead ends: 184 [2022-02-10 03:15:39,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:39,238 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 43 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-10 03:15:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 90. [2022-02-10 03:15:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.067415730337079) internal successors, (184), 89 states have internal predecessors, (184), 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 03:15:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 184 transitions. [2022-02-10 03:15:39,241 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 184 transitions. Word has length 17 [2022-02-10 03:15:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,241 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 184 transitions. [2022-02-10 03:15:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 184 transitions. [2022-02-10 03:15:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-10 03:15:39,242 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1410462031, now seen corresponding path program 18 times [2022-02-10 03:15:39,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575684710] [2022-02-10 03:15:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,302 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 03:15:39,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575684710] [2022-02-10 03:15:39,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575684710] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469033773] [2022-02-10 03:15:39,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,304 INFO L87 Difference]: Start difference. First operand 90 states and 184 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,408 INFO L93 Difference]: Finished difference Result 181 states and 354 transitions. [2022-02-10 03:15:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,409 INFO L225 Difference]: With dead ends: 181 [2022-02-10 03:15:39,409 INFO L226 Difference]: Without dead ends: 174 [2022-02-10 03:15:39,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:39,410 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 44 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-10 03:15:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 88. [2022-02-10 03:15:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.045977011494253) internal successors, (178), 87 states have internal predecessors, (178), 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 03:15:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 178 transitions. [2022-02-10 03:15:39,413 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 178 transitions. Word has length 17 [2022-02-10 03:15:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 178 transitions. [2022-02-10 03:15:39,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 178 transitions. [2022-02-10 03:15:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-10 03:15:39,414 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1683963973, now seen corresponding path program 19 times [2022-02-10 03:15:39,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111880341] [2022-02-10 03:15:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,471 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 03:15:39,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111880341] [2022-02-10 03:15:39,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111880341] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067550093] [2022-02-10 03:15:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,473 INFO L87 Difference]: Start difference. First operand 88 states and 178 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,591 INFO L93 Difference]: Finished difference Result 164 states and 306 transitions. [2022-02-10 03:15:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,592 INFO L225 Difference]: With dead ends: 164 [2022-02-10 03:15:39,592 INFO L226 Difference]: Without dead ends: 158 [2022-02-10 03:15:39,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:39,593 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 97 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 41 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-10 03:15:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 92. [2022-02-10 03:15:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.032967032967033) internal successors, (185), 91 states have internal predecessors, (185), 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 03:15:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 185 transitions. [2022-02-10 03:15:39,595 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 185 transitions. Word has length 17 [2022-02-10 03:15:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,595 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 185 transitions. [2022-02-10 03:15:39,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 185 transitions. [2022-02-10 03:15:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-10 03:15:39,596 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 408425831, now seen corresponding path program 20 times [2022-02-10 03:15:39,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398048138] [2022-02-10 03:15:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,647 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 03:15:39,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398048138] [2022-02-10 03:15:39,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398048138] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343117744] [2022-02-10 03:15:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,649 INFO L87 Difference]: Start difference. First operand 92 states and 185 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,764 INFO L93 Difference]: Finished difference Result 156 states and 298 transitions. [2022-02-10 03:15:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,765 INFO L225 Difference]: With dead ends: 156 [2022-02-10 03:15:39,765 INFO L226 Difference]: Without dead ends: 151 [2022-02-10 03:15:39,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:39,767 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 60 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 47 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-02-10 03:15:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 93. [2022-02-10 03:15:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 states have internal predecessors, (186), 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 03:15:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 186 transitions. [2022-02-10 03:15:39,771 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 186 transitions. Word has length 17 [2022-02-10 03:15:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 186 transitions. [2022-02-10 03:15:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 186 transitions. [2022-02-10 03:15:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-10 03:15:39,772 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -978369885, now seen corresponding path program 21 times [2022-02-10 03:15:39,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63080179] [2022-02-10 03:15:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,825 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 03:15:39,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63080179] [2022-02-10 03:15:39,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63080179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64280711] [2022-02-10 03:15:39,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,826 INFO L87 Difference]: Start difference. First operand 93 states and 186 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:39,912 INFO L93 Difference]: Finished difference Result 199 states and 366 transitions. [2022-02-10 03:15:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:39,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:39,913 INFO L225 Difference]: With dead ends: 199 [2022-02-10 03:15:39,913 INFO L226 Difference]: Without dead ends: 193 [2022-02-10 03:15:39,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:39,913 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 120 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:39,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 52 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-10 03:15:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 96. [2022-02-10 03:15:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.0526315789473686) internal successors, (195), 95 states have internal predecessors, (195), 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 03:15:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 195 transitions. [2022-02-10 03:15:39,916 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 195 transitions. Word has length 17 [2022-02-10 03:15:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:39,916 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 195 transitions. [2022-02-10 03:15:39,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 195 transitions. [2022-02-10 03:15:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:39,917 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:39,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:39,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-10 03:15:39,917 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1340351995, now seen corresponding path program 22 times [2022-02-10 03:15:39,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:39,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655928784] [2022-02-10 03:15:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:39,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:39,964 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 03:15:39,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:39,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655928784] [2022-02-10 03:15:39,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655928784] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:39,964 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:39,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:39,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053578554] [2022-02-10 03:15:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:39,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:39,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:39,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:39,966 INFO L87 Difference]: Start difference. First operand 96 states and 195 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,076 INFO L93 Difference]: Finished difference Result 198 states and 364 transitions. [2022-02-10 03:15:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,077 INFO L225 Difference]: With dead ends: 198 [2022-02-10 03:15:40,077 INFO L226 Difference]: Without dead ends: 191 [2022-02-10 03:15:40,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:40,077 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 120 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 54 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-02-10 03:15:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 95. [2022-02-10 03:15:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 94 states have internal predecessors, (191), 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 03:15:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 191 transitions. [2022-02-10 03:15:40,080 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 191 transitions. Word has length 17 [2022-02-10 03:15:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,080 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 191 transitions. [2022-02-10 03:15:40,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 191 transitions. [2022-02-10 03:15:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,081 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-10 03:15:40,081 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1590122309, now seen corresponding path program 23 times [2022-02-10 03:15:40,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005771197] [2022-02-10 03:15:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:40,134 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 03:15:40,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:40,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005771197] [2022-02-10 03:15:40,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005771197] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:40,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:40,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:40,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503852935] [2022-02-10 03:15:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:40,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:40,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:40,135 INFO L87 Difference]: Start difference. First operand 95 states and 191 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,248 INFO L93 Difference]: Finished difference Result 189 states and 355 transitions. [2022-02-10 03:15:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,248 INFO L225 Difference]: With dead ends: 189 [2022-02-10 03:15:40,248 INFO L226 Difference]: Without dead ends: 183 [2022-02-10 03:15:40,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:40,249 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 80 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 46 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-10 03:15:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 97. [2022-02-10 03:15:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 96 states have internal predecessors, (196), 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 03:15:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 196 transitions. [2022-02-10 03:15:40,251 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 196 transitions. Word has length 17 [2022-02-10 03:15:40,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,251 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 196 transitions. [2022-02-10 03:15:40,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 196 transitions. [2022-02-10 03:15:40,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-10 03:15:40,252 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash -275304665, now seen corresponding path program 24 times [2022-02-10 03:15:40,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202368940] [2022-02-10 03:15:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:40,304 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 03:15:40,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:40,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202368940] [2022-02-10 03:15:40,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202368940] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:40,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:40,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:40,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29272463] [2022-02-10 03:15:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:40,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:40,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:40,305 INFO L87 Difference]: Start difference. First operand 97 states and 196 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,415 INFO L93 Difference]: Finished difference Result 180 states and 346 transitions. [2022-02-10 03:15:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,416 INFO L225 Difference]: With dead ends: 180 [2022-02-10 03:15:40,416 INFO L226 Difference]: Without dead ends: 175 [2022-02-10 03:15:40,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:40,417 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 56 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-02-10 03:15:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 96. [2022-02-10 03:15:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 95 states have internal predecessors, (192), 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 03:15:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 192 transitions. [2022-02-10 03:15:40,419 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 192 transitions. Word has length 17 [2022-02-10 03:15:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,419 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 192 transitions. [2022-02-10 03:15:40,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 192 transitions. [2022-02-10 03:15:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-10 03:15:40,419 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1029545265, now seen corresponding path program 25 times [2022-02-10 03:15:40,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815452516] [2022-02-10 03:15:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:40,482 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 03:15:40,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:40,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815452516] [2022-02-10 03:15:40,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815452516] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:40,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:40,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:40,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197676449] [2022-02-10 03:15:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:40,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:40,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:40,483 INFO L87 Difference]: Start difference. First operand 96 states and 192 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,587 INFO L93 Difference]: Finished difference Result 173 states and 316 transitions. [2022-02-10 03:15:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,587 INFO L225 Difference]: With dead ends: 173 [2022-02-10 03:15:40,587 INFO L226 Difference]: Without dead ends: 167 [2022-02-10 03:15:40,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:40,588 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 52 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-02-10 03:15:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 100. [2022-02-10 03:15:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 99 states have internal predecessors, (201), 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 03:15:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 201 transitions. [2022-02-10 03:15:40,590 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 201 transitions. Word has length 17 [2022-02-10 03:15:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,590 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 201 transitions. [2022-02-10 03:15:40,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 201 transitions. [2022-02-10 03:15:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,590 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-10 03:15:40,591 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1399995057, now seen corresponding path program 26 times [2022-02-10 03:15:40,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460825682] [2022-02-10 03:15:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:40,663 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 03:15:40,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:40,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460825682] [2022-02-10 03:15:40,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460825682] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:40,664 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:40,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:40,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001453976] [2022-02-10 03:15:40,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:40,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:40,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:40,665 INFO L87 Difference]: Start difference. First operand 100 states and 201 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,777 INFO L93 Difference]: Finished difference Result 165 states and 308 transitions. [2022-02-10 03:15:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,777 INFO L225 Difference]: With dead ends: 165 [2022-02-10 03:15:40,778 INFO L226 Difference]: Without dead ends: 160 [2022-02-10 03:15:40,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:40,778 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 52 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-02-10 03:15:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 98. [2022-02-10 03:15:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 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 03:15:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 196 transitions. [2022-02-10 03:15:40,780 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 196 transitions. Word has length 17 [2022-02-10 03:15:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,780 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 196 transitions. [2022-02-10 03:15:40,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 196 transitions. [2022-02-10 03:15:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,781 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-10 03:15:40,781 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash 73280655, now seen corresponding path program 27 times [2022-02-10 03:15:40,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544274086] [2022-02-10 03:15:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:40,837 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 03:15:40,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:40,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544274086] [2022-02-10 03:15:40,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544274086] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:40,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:40,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:40,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477002508] [2022-02-10 03:15:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:40,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:40,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:40,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:40,839 INFO L87 Difference]: Start difference. First operand 98 states and 196 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:40,949 INFO L93 Difference]: Finished difference Result 193 states and 343 transitions. [2022-02-10 03:15:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:40,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:40,950 INFO L225 Difference]: With dead ends: 193 [2022-02-10 03:15:40,950 INFO L226 Difference]: Without dead ends: 187 [2022-02-10 03:15:40,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:40,950 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 127 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:40,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 49 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-02-10 03:15:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 100. [2022-02-10 03:15:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0606060606060606) internal successors, (204), 99 states have internal predecessors, (204), 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 03:15:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 204 transitions. [2022-02-10 03:15:40,953 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 204 transitions. Word has length 17 [2022-02-10 03:15:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:40,953 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 204 transitions. [2022-02-10 03:15:40,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 204 transitions. [2022-02-10 03:15:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:40,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:40,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:40,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-10 03:15:40,954 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -288701455, now seen corresponding path program 28 times [2022-02-10 03:15:40,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:40,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634205124] [2022-02-10 03:15:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:40,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,030 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 03:15:41,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634205124] [2022-02-10 03:15:41,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634205124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664112213] [2022-02-10 03:15:41,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,032 INFO L87 Difference]: Start difference. First operand 100 states and 204 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:41,141 INFO L93 Difference]: Finished difference Result 184 states and 334 transitions. [2022-02-10 03:15:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:41,142 INFO L225 Difference]: With dead ends: 184 [2022-02-10 03:15:41,142 INFO L226 Difference]: Without dead ends: 177 [2022-02-10 03:15:41,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:41,143 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:41,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 54 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-10 03:15:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 99. [2022-02-10 03:15:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 98 states have internal predecessors, (200), 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 03:15:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 200 transitions. [2022-02-10 03:15:41,145 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 200 transitions. Word has length 17 [2022-02-10 03:15:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:41,145 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 200 transitions. [2022-02-10 03:15:41,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 200 transitions. [2022-02-10 03:15:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:41,145 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:41,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:41,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-10 03:15:41,146 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1855164943, now seen corresponding path program 29 times [2022-02-10 03:15:41,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:41,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94571172] [2022-02-10 03:15:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:41,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,206 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 03:15:41,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94571172] [2022-02-10 03:15:41,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94571172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976775599] [2022-02-10 03:15:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,208 INFO L87 Difference]: Start difference. First operand 99 states and 200 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:41,332 INFO L93 Difference]: Finished difference Result 182 states and 331 transitions. [2022-02-10 03:15:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:41,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:41,333 INFO L225 Difference]: With dead ends: 182 [2022-02-10 03:15:41,333 INFO L226 Difference]: Without dead ends: 177 [2022-02-10 03:15:41,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:41,334 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:41,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 54 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-10 03:15:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 100. [2022-02-10 03:15:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 99 states have internal predecessors, (203), 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 03:15:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 203 transitions. [2022-02-10 03:15:41,337 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 203 transitions. Word has length 17 [2022-02-10 03:15:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:41,337 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 203 transitions. [2022-02-10 03:15:41,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 203 transitions. [2022-02-10 03:15:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:41,338 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:41,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:41,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-10 03:15:41,338 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash 997714929, now seen corresponding path program 30 times [2022-02-10 03:15:41,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:41,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197715601] [2022-02-10 03:15:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:41,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,391 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 03:15:41,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197715601] [2022-02-10 03:15:41,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197715601] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970307348] [2022-02-10 03:15:41,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,393 INFO L87 Difference]: Start difference. First operand 100 states and 203 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:41,493 INFO L93 Difference]: Finished difference Result 173 states and 322 transitions. [2022-02-10 03:15:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:41,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:41,494 INFO L225 Difference]: With dead ends: 173 [2022-02-10 03:15:41,494 INFO L226 Difference]: Without dead ends: 167 [2022-02-10 03:15:41,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:41,494 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:41,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 54 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-02-10 03:15:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 98. [2022-02-10 03:15:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 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 03:15:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 196 transitions. [2022-02-10 03:15:41,497 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 196 transitions. Word has length 17 [2022-02-10 03:15:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:41,497 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 196 transitions. [2022-02-10 03:15:41,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 196 transitions. [2022-02-10 03:15:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:41,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:41,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:41,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-10 03:15:41,498 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:41,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2039147975, now seen corresponding path program 31 times [2022-02-10 03:15:41,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:41,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563792162] [2022-02-10 03:15:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:41,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,557 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 03:15:41,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563792162] [2022-02-10 03:15:41,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563792162] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170792303] [2022-02-10 03:15:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,558 INFO L87 Difference]: Start difference. First operand 98 states and 196 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:41,693 INFO L93 Difference]: Finished difference Result 191 states and 342 transitions. [2022-02-10 03:15:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:41,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:41,694 INFO L225 Difference]: With dead ends: 191 [2022-02-10 03:15:41,694 INFO L226 Difference]: Without dead ends: 185 [2022-02-10 03:15:41,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:41,695 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 102 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:41,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 61 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-02-10 03:15:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 100. [2022-02-10 03:15:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.080808080808081) internal successors, (206), 99 states have internal predecessors, (206), 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 03:15:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 206 transitions. [2022-02-10 03:15:41,698 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 206 transitions. Word has length 17 [2022-02-10 03:15:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:41,698 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 206 transitions. [2022-02-10 03:15:41,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 206 transitions. [2022-02-10 03:15:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:41,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:41,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:41,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-10 03:15:41,699 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1893837211, now seen corresponding path program 32 times [2022-02-10 03:15:41,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:41,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320650873] [2022-02-10 03:15:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:41,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,760 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 03:15:41,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320650873] [2022-02-10 03:15:41,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320650873] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020393416] [2022-02-10 03:15:41,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,762 INFO L87 Difference]: Start difference. First operand 100 states and 206 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:41,871 INFO L93 Difference]: Finished difference Result 190 states and 340 transitions. [2022-02-10 03:15:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:41,872 INFO L225 Difference]: With dead ends: 190 [2022-02-10 03:15:41,872 INFO L226 Difference]: Without dead ends: 183 [2022-02-10 03:15:41,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:41,872 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 102 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:41,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 62 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-02-10 03:15:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 99. [2022-02-10 03:15:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.061224489795918) internal successors, (202), 98 states have internal predecessors, (202), 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 03:15:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 202 transitions. [2022-02-10 03:15:41,876 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 202 transitions. Word has length 17 [2022-02-10 03:15:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:41,876 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 202 transitions. [2022-02-10 03:15:41,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 202 transitions. [2022-02-10 03:15:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:41,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:41,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:41,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-10 03:15:41,877 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash 529344219, now seen corresponding path program 33 times [2022-02-10 03:15:41,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:41,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821824466] [2022-02-10 03:15:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:41,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:41,925 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 03:15:41,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:41,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821824466] [2022-02-10 03:15:41,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821824466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:41,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:41,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:41,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627991041] [2022-02-10 03:15:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:41,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:41,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:41,927 INFO L87 Difference]: Start difference. First operand 99 states and 202 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:42,107 INFO L93 Difference]: Finished difference Result 188 states and 337 transitions. [2022-02-10 03:15:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:42,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:42,108 INFO L225 Difference]: With dead ends: 188 [2022-02-10 03:15:42,108 INFO L226 Difference]: Without dead ends: 182 [2022-02-10 03:15:42,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:42,110 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 98 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:42,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 55 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-10 03:15:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 101. [2022-02-10 03:15:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.07) internal successors, (207), 100 states have internal predecessors, (207), 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 03:15:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 207 transitions. [2022-02-10 03:15:42,116 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 207 transitions. Word has length 17 [2022-02-10 03:15:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:42,116 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 207 transitions. [2022-02-10 03:15:42,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 207 transitions. [2022-02-10 03:15:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:42,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:42,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:42,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-10 03:15:42,117 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1336082755, now seen corresponding path program 34 times [2022-02-10 03:15:42,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:42,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716567334] [2022-02-10 03:15:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:42,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:42,187 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 03:15:42,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:42,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716567334] [2022-02-10 03:15:42,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716567334] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:42,188 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:42,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:42,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693476380] [2022-02-10 03:15:42,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:42,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:42,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:42,189 INFO L87 Difference]: Start difference. First operand 101 states and 207 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:42,294 INFO L93 Difference]: Finished difference Result 181 states and 331 transitions. [2022-02-10 03:15:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:42,294 INFO L225 Difference]: With dead ends: 181 [2022-02-10 03:15:42,294 INFO L226 Difference]: Without dead ends: 176 [2022-02-10 03:15:42,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:42,295 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:42,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 52 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-10 03:15:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 99. [2022-02-10 03:15:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.061224489795918) internal successors, (202), 98 states have internal predecessors, (202), 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 03:15:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 202 transitions. [2022-02-10 03:15:42,298 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 202 transitions. Word has length 17 [2022-02-10 03:15:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:42,298 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 202 transitions. [2022-02-10 03:15:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 202 transitions. [2022-02-10 03:15:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:42,298 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:42,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:42,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-10 03:15:42,299 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash 327373723, now seen corresponding path program 35 times [2022-02-10 03:15:42,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:42,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247669801] [2022-02-10 03:15:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:42,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:42,343 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 03:15:42,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:42,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247669801] [2022-02-10 03:15:42,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247669801] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:42,343 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:42,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:42,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467486390] [2022-02-10 03:15:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:42,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:42,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:42,344 INFO L87 Difference]: Start difference. First operand 99 states and 202 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:42,440 INFO L93 Difference]: Finished difference Result 181 states and 330 transitions. [2022-02-10 03:15:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:42,441 INFO L225 Difference]: With dead ends: 181 [2022-02-10 03:15:42,441 INFO L226 Difference]: Without dead ends: 176 [2022-02-10 03:15:42,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:42,442 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:42,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 50 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-10 03:15:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 100. [2022-02-10 03:15:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 99 states have internal predecessors, (205), 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 03:15:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 205 transitions. [2022-02-10 03:15:42,445 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 205 transitions. Word has length 17 [2022-02-10 03:15:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:42,445 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 205 transitions. [2022-02-10 03:15:42,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 205 transitions. [2022-02-10 03:15:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 03:15:42,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:42,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:15:42,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-10 03:15:42,446 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1114713701, now seen corresponding path program 36 times [2022-02-10 03:15:42,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:42,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576664033] [2022-02-10 03:15:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:42,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:42,496 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 03:15:42,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:42,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576664033] [2022-02-10 03:15:42,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576664033] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:15:42,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:15:42,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 03:15:42,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850007600] [2022-02-10 03:15:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:42,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:42,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:42,497 INFO L87 Difference]: Start difference. First operand 100 states and 205 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:42,602 INFO L93 Difference]: Finished difference Result 172 states and 321 transitions. [2022-02-10 03:15:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:42,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-02-10 03:15:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:42,603 INFO L225 Difference]: With dead ends: 172 [2022-02-10 03:15:42,603 INFO L226 Difference]: Without dead ends: 166 [2022-02-10 03:15:42,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:42,603 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:42,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 72 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-02-10 03:15:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 99. [2022-02-10 03:15:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.061224489795918) internal successors, (202), 98 states have internal predecessors, (202), 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 03:15:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 202 transitions. [2022-02-10 03:15:42,606 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 202 transitions. Word has length 17 [2022-02-10 03:15:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:42,606 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 202 transitions. [2022-02-10 03:15:42,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 03:15:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 202 transitions. [2022-02-10 03:15:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:42,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:42,607 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 03:15:42,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-10 03:15:42,607 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 89492676, now seen corresponding path program 1 times [2022-02-10 03:15:42,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:42,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232738647] [2022-02-10 03:15:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:42,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:42,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:42,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232738647] [2022-02-10 03:15:42,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232738647] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:42,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026508483] [2022-02-10 03:15:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:42,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:42,695 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 03:15:42,725 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 03:15:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:42,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:42,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:42,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:43,176 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 03:15:43,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026508483] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:43,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:43,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2022-02-10 03:15:43,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266851584] [2022-02-10 03:15:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:43,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:43,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:15:43,177 INFO L87 Difference]: Start difference. First operand 99 states and 202 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:43,341 INFO L93 Difference]: Finished difference Result 164 states and 317 transitions. [2022-02-10 03:15:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:43,342 INFO L225 Difference]: With dead ends: 164 [2022-02-10 03:15:43,342 INFO L226 Difference]: Without dead ends: 155 [2022-02-10 03:15:43,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:15:43,343 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:43,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 38 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-02-10 03:15:43,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 100. [2022-02-10 03:15:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.0606060606060606) internal successors, (204), 99 states have internal predecessors, (204), 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 03:15:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 204 transitions. [2022-02-10 03:15:43,345 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 204 transitions. Word has length 18 [2022-02-10 03:15:43,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:43,346 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 204 transitions. [2022-02-10 03:15:43,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 204 transitions. [2022-02-10 03:15:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:43,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:43,346 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 03:15:43,374 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 03:15:43,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 03:15:43,555 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1840224994, now seen corresponding path program 1 times [2022-02-10 03:15:43,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:43,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148377075] [2022-02-10 03:15:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:43,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:43,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:43,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148377075] [2022-02-10 03:15:43,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148377075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:43,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934935363] [2022-02-10 03:15:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:43,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:43,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:43,619 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 03:15:43,621 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 03:15:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:43,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:43,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:43,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:43,859 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 03:15:43,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934935363] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:43,859 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:43,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2022-02-10 03:15:43,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394486261] [2022-02-10 03:15:43,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:43,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:43,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-10 03:15:43,860 INFO L87 Difference]: Start difference. First operand 100 states and 204 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:43,943 INFO L93 Difference]: Finished difference Result 169 states and 328 transitions. [2022-02-10 03:15:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:43,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:43,944 INFO L225 Difference]: With dead ends: 169 [2022-02-10 03:15:43,944 INFO L226 Difference]: Without dead ends: 154 [2022-02-10 03:15:43,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:43,945 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 68 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:43,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 28 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-10 03:15:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 104. [2022-02-10 03:15:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 103 states have internal predecessors, (210), 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 03:15:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 210 transitions. [2022-02-10 03:15:43,947 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 210 transitions. Word has length 18 [2022-02-10 03:15:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:43,948 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 210 transitions. [2022-02-10 03:15:43,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 210 transitions. [2022-02-10 03:15:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:43,948 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:43,948 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 03:15:43,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 03:15:44,170 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,SelfDestructingSolverStorable69 [2022-02-10 03:15:44,170 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1059579486, now seen corresponding path program 2 times [2022-02-10 03:15:44,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:44,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416848392] [2022-02-10 03:15:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:44,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:44,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416848392] [2022-02-10 03:15:44,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416848392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:44,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117160945] [2022-02-10 03:15:44,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:15:44,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:44,287 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 03:15:44,335 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 03:15:44,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:44,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:44,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:44,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:44,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:44,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117160945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:44,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:44,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2022-02-10 03:15:44,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449804250] [2022-02-10 03:15:44,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:44,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:15:44,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:15:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:44,561 INFO L87 Difference]: Start difference. First operand 104 states and 210 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:45,065 INFO L93 Difference]: Finished difference Result 333 states and 636 transitions. [2022-02-10 03:15:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:15:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:45,067 INFO L225 Difference]: With dead ends: 333 [2022-02-10 03:15:45,067 INFO L226 Difference]: Without dead ends: 275 [2022-02-10 03:15:45,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:15:45,067 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 279 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:45,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 153 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:15:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-02-10 03:15:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 116. [2022-02-10 03:15:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.1565217391304348) internal successors, (248), 115 states have internal predecessors, (248), 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 03:15:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 248 transitions. [2022-02-10 03:15:45,072 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 248 transitions. Word has length 18 [2022-02-10 03:15:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:45,072 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 248 transitions. [2022-02-10 03:15:45,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 248 transitions. [2022-02-10 03:15:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:45,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:45,072 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 03:15:45,095 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 03:15:45,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:45,285 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash -19343688, now seen corresponding path program 3 times [2022-02-10 03:15:45,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:45,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695836418] [2022-02-10 03:15:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:45,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:45,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:45,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695836418] [2022-02-10 03:15:45,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695836418] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:45,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610191269] [2022-02-10 03:15:45,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:15:45,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:45,402 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 03:15:45,404 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 03:15:45,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:15:45,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:45,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:45,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:45,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610191269] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:45,668 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:45,668 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2022-02-10 03:15:45,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653241035] [2022-02-10 03:15:45,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:45,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:15:45,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:15:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:45,669 INFO L87 Difference]: Start difference. First operand 116 states and 248 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:46,130 INFO L93 Difference]: Finished difference Result 281 states and 547 transitions. [2022-02-10 03:15:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:15:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:46,131 INFO L225 Difference]: With dead ends: 281 [2022-02-10 03:15:46,131 INFO L226 Difference]: Without dead ends: 225 [2022-02-10 03:15:46,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:15:46,131 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:46,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 188 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:15:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-10 03:15:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 112. [2022-02-10 03:15:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.144144144144144) internal successors, (238), 111 states have internal predecessors, (238), 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 03:15:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 238 transitions. [2022-02-10 03:15:46,134 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 238 transitions. Word has length 18 [2022-02-10 03:15:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:46,135 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 238 transitions. [2022-02-10 03:15:46,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 03:15:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 238 transitions. [2022-02-10 03:15:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:46,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:46,135 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 03:15:46,151 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 03:15:46,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:46,336 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:46,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:46,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1522788552, now seen corresponding path program 4 times [2022-02-10 03:15:46,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:46,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48849412] [2022-02-10 03:15:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:46,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:46,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:46,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48849412] [2022-02-10 03:15:46,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48849412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:46,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411683903] [2022-02-10 03:15:46,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:15:46,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:46,417 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 03:15:46,419 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 03:15:46,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:15:46,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:46,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:46,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:46,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:46,771 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 03:15:46,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411683903] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:46,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:46,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2022-02-10 03:15:46,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851573473] [2022-02-10 03:15:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:46,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:46,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:15:46,773 INFO L87 Difference]: Start difference. First operand 112 states and 238 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:46,913 INFO L93 Difference]: Finished difference Result 181 states and 361 transitions. [2022-02-10 03:15:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:46,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:46,913 INFO L225 Difference]: With dead ends: 181 [2022-02-10 03:15:46,913 INFO L226 Difference]: Without dead ends: 169 [2022-02-10 03:15:46,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:15:46,914 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 79 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:46,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 53 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:46,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-02-10 03:15:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 110. [2022-02-10 03:15:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.1559633027522938) internal successors, (235), 109 states have internal predecessors, (235), 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 03:15:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 235 transitions. [2022-02-10 03:15:46,917 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 235 transitions. Word has length 18 [2022-02-10 03:15:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:46,917 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 235 transitions. [2022-02-10 03:15:46,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 235 transitions. [2022-02-10 03:15:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:46,917 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:46,918 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 03:15:46,937 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 03:15:47,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:47,131 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:47,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1620819267, now seen corresponding path program 1 times [2022-02-10 03:15:47,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:47,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543427075] [2022-02-10 03:15:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:47,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:47,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:47,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543427075] [2022-02-10 03:15:47,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543427075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:47,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663350643] [2022-02-10 03:15:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:47,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:47,200 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 03:15:47,201 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 03:15:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:47,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:47,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:47,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:47,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663350643] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:47,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:47,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 03:15:47,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390779530] [2022-02-10 03:15:47,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:47,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:15:47,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:15:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:47,497 INFO L87 Difference]: Start difference. First operand 110 states and 235 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 03:15:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:47,672 INFO L93 Difference]: Finished difference Result 200 states and 404 transitions. [2022-02-10 03:15:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 03:15:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:47,673 INFO L225 Difference]: With dead ends: 200 [2022-02-10 03:15:47,673 INFO L226 Difference]: Without dead ends: 193 [2022-02-10 03:15:47,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:15:47,673 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 126 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:47,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 71 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-10 03:15:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 114. [2022-02-10 03:15:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.150442477876106) internal successors, (243), 113 states have internal predecessors, (243), 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 03:15:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 243 transitions. [2022-02-10 03:15:47,676 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 243 transitions. Word has length 18 [2022-02-10 03:15:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:47,677 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 243 transitions. [2022-02-10 03:15:47,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 03:15:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 243 transitions. [2022-02-10 03:15:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:47,677 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:47,677 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 03:15:47,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:47,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:47,879 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1587022781, now seen corresponding path program 2 times [2022-02-10 03:15:47,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:47,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174163465] [2022-02-10 03:15:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:47,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:47,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:47,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174163465] [2022-02-10 03:15:47,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174163465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:47,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707597034] [2022-02-10 03:15:47,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:15:47,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:47,914 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 03:15:47,915 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 03:15:47,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:47,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:47,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:47,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:48,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:48,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707597034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:48,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:48,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-02-10 03:15:48,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543426106] [2022-02-10 03:15:48,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:48,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 03:15:48,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 03:15:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:15:48,092 INFO L87 Difference]: Start difference. First operand 114 states and 243 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 03:15:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:48,182 INFO L93 Difference]: Finished difference Result 186 states and 386 transitions. [2022-02-10 03:15:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 03:15:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:48,183 INFO L225 Difference]: With dead ends: 186 [2022-02-10 03:15:48,183 INFO L226 Difference]: Without dead ends: 173 [2022-02-10 03:15:48,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:15:48,184 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:48,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 39 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-10 03:15:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 125. [2022-02-10 03:15:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.161290322580645) internal successors, (268), 124 states have internal predecessors, (268), 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 03:15:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 268 transitions. [2022-02-10 03:15:48,187 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 268 transitions. Word has length 18 [2022-02-10 03:15:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:48,187 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 268 transitions. [2022-02-10 03:15:48,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 03:15:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 268 transitions. [2022-02-10 03:15:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:48,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:48,188 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 03:15:48,210 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 03:15:48,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:48,403 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1383075836, now seen corresponding path program 5 times [2022-02-10 03:15:48,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:48,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114285320] [2022-02-10 03:15:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:48,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:48,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:48,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114285320] [2022-02-10 03:15:48,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114285320] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:48,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810359437] [2022-02-10 03:15:48,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:15:48,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:48,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:48,454 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 03:15:48,454 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 03:15:48,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:48,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:48,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:48,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:48,694 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 03:15:48,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810359437] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:48,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:48,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-02-10 03:15:48,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434528986] [2022-02-10 03:15:48,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:48,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:48,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:48,696 INFO L87 Difference]: Start difference. First operand 125 states and 268 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:48,868 INFO L93 Difference]: Finished difference Result 183 states and 351 transitions. [2022-02-10 03:15:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:48,869 INFO L225 Difference]: With dead ends: 183 [2022-02-10 03:15:48,869 INFO L226 Difference]: Without dead ends: 165 [2022-02-10 03:15:48,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:15:48,870 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 65 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:48,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 29 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-02-10 03:15:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 128. [2022-02-10 03:15:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.0866141732283463) internal successors, (265), 127 states have internal predecessors, (265), 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 03:15:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 265 transitions. [2022-02-10 03:15:48,872 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 265 transitions. Word has length 18 [2022-02-10 03:15:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:48,873 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 265 transitions. [2022-02-10 03:15:48,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 265 transitions. [2022-02-10 03:15:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:48,873 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:48,873 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 03:15:48,898 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 03:15:49,074 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,SelfDestructingSolverStorable75 [2022-02-10 03:15:49,074 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:49,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash 518870361, now seen corresponding path program 3 times [2022-02-10 03:15:49,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:49,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324519081] [2022-02-10 03:15:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:49,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:49,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:49,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324519081] [2022-02-10 03:15:49,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324519081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:49,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080974666] [2022-02-10 03:15:49,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:15:49,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:49,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:49,151 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 03:15:49,152 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 03:15:49,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:15:49,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:49,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:49,521 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 03:15:49,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080974666] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:49,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:49,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-02-10 03:15:49,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451639535] [2022-02-10 03:15:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:49,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:49,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:49,522 INFO L87 Difference]: Start difference. First operand 128 states and 265 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:49,660 INFO L93 Difference]: Finished difference Result 182 states and 352 transitions. [2022-02-10 03:15:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:49,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:49,661 INFO L225 Difference]: With dead ends: 182 [2022-02-10 03:15:49,661 INFO L226 Difference]: Without dead ends: 171 [2022-02-10 03:15:49,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:15:49,662 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:49,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 39 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-02-10 03:15:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2022-02-10 03:15:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.078740157480315) internal successors, (264), 127 states have internal predecessors, (264), 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 03:15:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 264 transitions. [2022-02-10 03:15:49,665 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 264 transitions. Word has length 18 [2022-02-10 03:15:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:49,665 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 264 transitions. [2022-02-10 03:15:49,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 264 transitions. [2022-02-10 03:15:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:49,665 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:49,665 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 03:15:49,690 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 03:15:49,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:49,874 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1871204834, now seen corresponding path program 2 times [2022-02-10 03:15:49,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:49,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987007117] [2022-02-10 03:15:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:49,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:49,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:49,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987007117] [2022-02-10 03:15:49,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987007117] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:49,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39663694] [2022-02-10 03:15:49,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:15:49,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:49,920 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 03:15:49,923 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 03:15:49,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:49,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:49,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:50,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:50,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39663694] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:50,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:50,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-02-10 03:15:50,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541198354] [2022-02-10 03:15:50,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:50,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:15:50,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:15:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:50,218 INFO L87 Difference]: Start difference. First operand 128 states and 264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 03:15:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:50,395 INFO L93 Difference]: Finished difference Result 248 states and 486 transitions. [2022-02-10 03:15:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:15:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 03:15:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:50,400 INFO L225 Difference]: With dead ends: 248 [2022-02-10 03:15:50,400 INFO L226 Difference]: Without dead ends: 218 [2022-02-10 03:15:50,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-10 03:15:50,401 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 191 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:50,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 92 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-02-10 03:15:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 144. [2022-02-10 03:15:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.1818181818181817) internal successors, (312), 143 states have internal predecessors, (312), 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 03:15:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 312 transitions. [2022-02-10 03:15:50,404 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 312 transitions. Word has length 18 [2022-02-10 03:15:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:50,404 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 312 transitions. [2022-02-10 03:15:50,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 03:15:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 312 transitions. [2022-02-10 03:15:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:50,405 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:50,405 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 03:15:50,437 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 03:15:50,619 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,SelfDestructingSolverStorable77 [2022-02-10 03:15:50,619 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -84525410, now seen corresponding path program 3 times [2022-02-10 03:15:50,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:50,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887895542] [2022-02-10 03:15:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:50,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:50,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:50,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887895542] [2022-02-10 03:15:50,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887895542] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:50,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902167351] [2022-02-10 03:15:50,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:15:50,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:50,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:50,679 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 03:15:50,680 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 03:15:50,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:15:50,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:50,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:50,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:50,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:50,975 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 03:15:50,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902167351] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:50,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:50,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-02-10 03:15:50,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031391340] [2022-02-10 03:15:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:50,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:50,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:50,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:50,976 INFO L87 Difference]: Start difference. First operand 144 states and 312 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:51,121 INFO L93 Difference]: Finished difference Result 222 states and 447 transitions. [2022-02-10 03:15:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:51,122 INFO L225 Difference]: With dead ends: 222 [2022-02-10 03:15:51,122 INFO L226 Difference]: Without dead ends: 213 [2022-02-10 03:15:51,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:15:51,123 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:51,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 63 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-10 03:15:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 144. [2022-02-10 03:15:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.1818181818181817) internal successors, (312), 143 states have internal predecessors, (312), 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 03:15:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 312 transitions. [2022-02-10 03:15:51,126 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 312 transitions. Word has length 18 [2022-02-10 03:15:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:51,126 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 312 transitions. [2022-02-10 03:15:51,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 312 transitions. [2022-02-10 03:15:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:51,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:51,126 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 03:15:51,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:51,331 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,SelfDestructingSolverStorable78 [2022-02-10 03:15:51,331 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1984256375, now seen corresponding path program 4 times [2022-02-10 03:15:51,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:51,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206954876] [2022-02-10 03:15:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:51,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:51,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:51,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206954876] [2022-02-10 03:15:51,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206954876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:51,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692716074] [2022-02-10 03:15:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:15:51,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:51,376 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 03:15:51,377 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 03:15:51,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:15:51,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:51,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:51,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:51,577 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 03:15:51,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692716074] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:51,577 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:51,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-02-10 03:15:51,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697835526] [2022-02-10 03:15:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:51,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:51,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:15:51,578 INFO L87 Difference]: Start difference. First operand 144 states and 312 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:51,659 INFO L93 Difference]: Finished difference Result 196 states and 406 transitions. [2022-02-10 03:15:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:51,660 INFO L225 Difference]: With dead ends: 196 [2022-02-10 03:15:51,660 INFO L226 Difference]: Without dead ends: 177 [2022-02-10 03:15:51,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:51,660 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:51,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 31 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-10 03:15:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2022-02-10 03:15:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.215686274509804) internal successors, (339), 153 states have internal predecessors, (339), 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 03:15:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 339 transitions. [2022-02-10 03:15:51,663 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 339 transitions. Word has length 18 [2022-02-10 03:15:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:51,663 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 339 transitions. [2022-02-10 03:15:51,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 339 transitions. [2022-02-10 03:15:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:51,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:51,664 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 03:15:51,688 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 03:15:51,879 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,SelfDestructingSolverStorable79 [2022-02-10 03:15:51,879 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1145303500, now seen corresponding path program 4 times [2022-02-10 03:15:51,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:51,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128422902] [2022-02-10 03:15:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:51,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:51,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:51,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128422902] [2022-02-10 03:15:51,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128422902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:51,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922124755] [2022-02-10 03:15:51,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:15:51,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:51,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:51,944 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 03:15:51,963 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 03:15:51,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:15:51,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:51,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:51,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:52,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:52,222 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 03:15:52,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922124755] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:52,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:52,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-02-10 03:15:52,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140946637] [2022-02-10 03:15:52,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:52,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:52,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:52,223 INFO L87 Difference]: Start difference. First operand 154 states and 339 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:52,373 INFO L93 Difference]: Finished difference Result 224 states and 451 transitions. [2022-02-10 03:15:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:52,376 INFO L225 Difference]: With dead ends: 224 [2022-02-10 03:15:52,376 INFO L226 Difference]: Without dead ends: 214 [2022-02-10 03:15:52,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:15:52,376 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:52,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 55 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-10 03:15:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 153. [2022-02-10 03:15:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2171052631578947) internal successors, (337), 152 states have internal predecessors, (337), 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 03:15:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 337 transitions. [2022-02-10 03:15:52,380 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 337 transitions. Word has length 18 [2022-02-10 03:15:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 337 transitions. [2022-02-10 03:15:52,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 337 transitions. [2022-02-10 03:15:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:52,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:52,380 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 03:15:52,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:52,591 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,SelfDestructingSolverStorable80 [2022-02-10 03:15:52,591 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash -558182630, now seen corresponding path program 6 times [2022-02-10 03:15:52,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:52,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096736262] [2022-02-10 03:15:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:52,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:52,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:52,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096736262] [2022-02-10 03:15:52,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096736262] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:52,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500055720] [2022-02-10 03:15:52,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:15:52,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:52,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:52,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 03:15:52,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:15:52,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:52,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:52,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:52,882 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 03:15:52,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500055720] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:52,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:52,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-02-10 03:15:52,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459920972] [2022-02-10 03:15:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:52,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:52,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:52,883 INFO L87 Difference]: Start difference. First operand 153 states and 337 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:52,961 INFO L93 Difference]: Finished difference Result 207 states and 437 transitions. [2022-02-10 03:15:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:52,961 INFO L225 Difference]: With dead ends: 207 [2022-02-10 03:15:52,962 INFO L226 Difference]: Without dead ends: 189 [2022-02-10 03:15:52,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:15:52,962 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:52,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 29 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-02-10 03:15:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2022-02-10 03:15:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.2025316455696204) internal successors, (348), 158 states have internal predecessors, (348), 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 03:15:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 348 transitions. [2022-02-10 03:15:52,964 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 348 transitions. Word has length 18 [2022-02-10 03:15:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 348 transitions. [2022-02-10 03:15:52,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 348 transitions. [2022-02-10 03:15:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:52,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:52,965 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 03:15:52,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:53,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:53,166 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash 323730107, now seen corresponding path program 5 times [2022-02-10 03:15:53,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:53,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386302553] [2022-02-10 03:15:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:53,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:53,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:53,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386302553] [2022-02-10 03:15:53,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386302553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:53,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599550669] [2022-02-10 03:15:53,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:15:53,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:53,258 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:53,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 03:15:53,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:53,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:53,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:53,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:53,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:53,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599550669] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:53,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:53,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-02-10 03:15:53,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095829076] [2022-02-10 03:15:53,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:53,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:15:53,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:15:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:53,518 INFO L87 Difference]: Start difference. First operand 159 states and 348 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 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 03:15:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:53,652 INFO L93 Difference]: Finished difference Result 190 states and 382 transitions. [2022-02-10 03:15:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 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 03:15:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:53,653 INFO L225 Difference]: With dead ends: 190 [2022-02-10 03:15:53,653 INFO L226 Difference]: Without dead ends: 177 [2022-02-10 03:15:53,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:15:53,653 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:53,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 64 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-10 03:15:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2022-02-10 03:15:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.206451612903226) internal successors, (342), 155 states have internal predecessors, (342), 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 03:15:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 342 transitions. [2022-02-10 03:15:53,656 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 342 transitions. Word has length 18 [2022-02-10 03:15:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:53,656 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 342 transitions. [2022-02-10 03:15:53,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 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 03:15:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 342 transitions. [2022-02-10 03:15:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:53,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:53,657 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 03:15:53,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-02-10 03:15:53,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:53,879 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash 989432814, now seen corresponding path program 5 times [2022-02-10 03:15:53,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:53,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370176215] [2022-02-10 03:15:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:53,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:53,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:53,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370176215] [2022-02-10 03:15:53,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370176215] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:53,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78393747] [2022-02-10 03:15:53,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:15:53,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:53,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:53,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:53,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 03:15:53,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:53,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:53,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:53,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:54,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:54,126 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 03:15:54,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78393747] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:54,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:54,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-02-10 03:15:54,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049025351] [2022-02-10 03:15:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:54,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:54,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:54,127 INFO L87 Difference]: Start difference. First operand 156 states and 342 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:54,199 INFO L93 Difference]: Finished difference Result 214 states and 449 transitions. [2022-02-10 03:15:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:54,200 INFO L225 Difference]: With dead ends: 214 [2022-02-10 03:15:54,200 INFO L226 Difference]: Without dead ends: 193 [2022-02-10 03:15:54,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:15:54,201 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:54,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 27 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 03:15:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-10 03:15:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2022-02-10 03:15:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.2222222222222223) internal successors, (360), 162 states have internal predecessors, (360), 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 03:15:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 360 transitions. [2022-02-10 03:15:54,204 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 360 transitions. Word has length 18 [2022-02-10 03:15:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:54,204 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 360 transitions. [2022-02-10 03:15:54,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 360 transitions. [2022-02-10 03:15:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:54,205 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:54,205 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 03:15:54,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-02-10 03:15:54,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:54,405 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -948144884, now seen corresponding path program 6 times [2022-02-10 03:15:54,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:54,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35570774] [2022-02-10 03:15:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:54,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:54,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:54,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35570774] [2022-02-10 03:15:54,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35570774] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:54,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467919543] [2022-02-10 03:15:54,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:15:54,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:54,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:54,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 03:15:54,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:15:54,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:54,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:54,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:54,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467919543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:54,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:54,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-02-10 03:15:54,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178045334] [2022-02-10 03:15:54,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:54,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:15:54,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:15:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:54,727 INFO L87 Difference]: Start difference. First operand 163 states and 360 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 03:15:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:54,891 INFO L93 Difference]: Finished difference Result 225 states and 458 transitions. [2022-02-10 03:15:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:15:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 03:15:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:54,892 INFO L225 Difference]: With dead ends: 225 [2022-02-10 03:15:54,892 INFO L226 Difference]: Without dead ends: 191 [2022-02-10 03:15:54,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:15:54,892 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 156 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:54,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 88 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-02-10 03:15:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 149. [2022-02-10 03:15:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.2094594594594597) internal successors, (327), 148 states have internal predecessors, (327), 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 03:15:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 327 transitions. [2022-02-10 03:15:54,896 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 327 transitions. Word has length 18 [2022-02-10 03:15:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:54,896 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 327 transitions. [2022-02-10 03:15:54,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 03:15:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 327 transitions. [2022-02-10 03:15:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:54,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:54,897 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 03:15:54,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-10 03:15:55,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:55,103 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 54955853, now seen corresponding path program 6 times [2022-02-10 03:15:55,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:55,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811958431] [2022-02-10 03:15:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:55,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:55,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:55,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811958431] [2022-02-10 03:15:55,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811958431] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:55,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131918176] [2022-02-10 03:15:55,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:15:55,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:55,192 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:55,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 03:15:55,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:15:55,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:55,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:55,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:55,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:55,481 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 03:15:55,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131918176] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:55,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:55,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-02-10 03:15:55,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853120388] [2022-02-10 03:15:55,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:55,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:55,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:55,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:55,484 INFO L87 Difference]: Start difference. First operand 149 states and 327 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:55,658 INFO L93 Difference]: Finished difference Result 194 states and 386 transitions. [2022-02-10 03:15:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:55,659 INFO L225 Difference]: With dead ends: 194 [2022-02-10 03:15:55,659 INFO L226 Difference]: Without dead ends: 186 [2022-02-10 03:15:55,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:15:55,660 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 90 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:55,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 51 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-02-10 03:15:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2022-02-10 03:15:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.2027027027027026) internal successors, (326), 148 states have internal predecessors, (326), 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 03:15:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 326 transitions. [2022-02-10 03:15:55,663 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 326 transitions. Word has length 18 [2022-02-10 03:15:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:55,664 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 326 transitions. [2022-02-10 03:15:55,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 326 transitions. [2022-02-10 03:15:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:55,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:55,664 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 03:15:55,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:55,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:55,879 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1125415457, now seen corresponding path program 7 times [2022-02-10 03:15:55,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:55,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843711105] [2022-02-10 03:15:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:55,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:55,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:55,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843711105] [2022-02-10 03:15:55,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843711105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:55,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61197589] [2022-02-10 03:15:55,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:15:55,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:55,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:55,973 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:55,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 03:15:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:55,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:55,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:56,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:56,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61197589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:56,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:56,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 03:15:56,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383536587] [2022-02-10 03:15:56,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:56,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 03:15:56,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 03:15:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:15:56,231 INFO L87 Difference]: Start difference. First operand 149 states and 326 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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 03:15:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:56,413 INFO L93 Difference]: Finished difference Result 184 states and 374 transitions. [2022-02-10 03:15:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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 03:15:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:56,414 INFO L225 Difference]: With dead ends: 184 [2022-02-10 03:15:56,414 INFO L226 Difference]: Without dead ends: 170 [2022-02-10 03:15:56,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-02-10 03:15:56,414 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:56,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 68 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-02-10 03:15:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 143. [2022-02-10 03:15:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.232394366197183) internal successors, (317), 142 states have internal predecessors, (317), 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 03:15:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 317 transitions. [2022-02-10 03:15:56,418 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 317 transitions. Word has length 18 [2022-02-10 03:15:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:56,418 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 317 transitions. [2022-02-10 03:15:56,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 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 03:15:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 317 transitions. [2022-02-10 03:15:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:56,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:56,419 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 03:15:56,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:56,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:56,631 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash -389980942, now seen corresponding path program 7 times [2022-02-10 03:15:56,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:56,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844216464] [2022-02-10 03:15:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:56,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:56,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:56,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844216464] [2022-02-10 03:15:56,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844216464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:56,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299944096] [2022-02-10 03:15:56,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:15:56,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:56,701 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:56,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 03:15:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:56,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:56,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:56,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299944096] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:56,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:56,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-10 03:15:56,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327572394] [2022-02-10 03:15:56,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:56,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 03:15:57,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 03:15:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:15:57,000 INFO L87 Difference]: Start difference. First operand 143 states and 317 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 03:15:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:57,228 INFO L93 Difference]: Finished difference Result 228 states and 447 transitions. [2022-02-10 03:15:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:57,228 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 18 [2022-02-10 03:15:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:57,229 INFO L225 Difference]: With dead ends: 228 [2022-02-10 03:15:57,229 INFO L226 Difference]: Without dead ends: 218 [2022-02-10 03:15:57,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-02-10 03:15:57,229 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 185 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:57,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 129 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:15:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-02-10 03:15:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 144. [2022-02-10 03:15:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.2447552447552446) internal successors, (321), 143 states have internal predecessors, (321), 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 03:15:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 321 transitions. [2022-02-10 03:15:57,232 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 321 transitions. Word has length 18 [2022-02-10 03:15:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:57,232 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 321 transitions. [2022-02-10 03:15:57,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 03:15:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 321 transitions. [2022-02-10 03:15:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:57,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:57,233 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 03:15:57,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:57,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-10 03:15:57,433 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:57,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1665519084, now seen corresponding path program 8 times [2022-02-10 03:15:57,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:57,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96780160] [2022-02-10 03:15:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:57,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:57,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:57,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96780160] [2022-02-10 03:15:57,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96780160] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:57,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935317406] [2022-02-10 03:15:57,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:15:57,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:57,463 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:57,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 03:15:57,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:57,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:57,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:57,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:57,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935317406] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:57,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:57,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-02-10 03:15:57,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108218615] [2022-02-10 03:15:57,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:57,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:57,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-10 03:15:57,603 INFO L87 Difference]: Start difference. First operand 144 states and 321 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 03:15:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:57,685 INFO L93 Difference]: Finished difference Result 197 states and 411 transitions. [2022-02-10 03:15:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 03:15:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:57,685 INFO L225 Difference]: With dead ends: 197 [2022-02-10 03:15:57,685 INFO L226 Difference]: Without dead ends: 181 [2022-02-10 03:15:57,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:15:57,686 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:57,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 47 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-02-10 03:15:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2022-02-10 03:15:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 2.2058823529411766) internal successors, (300), 136 states have internal predecessors, (300), 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 03:15:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 300 transitions. [2022-02-10 03:15:57,689 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 300 transitions. Word has length 18 [2022-02-10 03:15:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:57,689 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 300 transitions. [2022-02-10 03:15:57,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 03:15:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 300 transitions. [2022-02-10 03:15:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:57,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:57,690 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 03:15:57,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 03:15:57,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-10 03:15:57,911 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1338317773, now seen corresponding path program 8 times [2022-02-10 03:15:57,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:57,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096773780] [2022-02-10 03:15:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:57,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:57,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:57,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096773780] [2022-02-10 03:15:57,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096773780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:57,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336048405] [2022-02-10 03:15:57,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:15:57,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:57,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:57,959 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:57,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 03:15:57,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:15:57,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:57,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:15:57,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:58,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:58,149 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 03:15:58,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336048405] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:58,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:58,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-02-10 03:15:58,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492790046] [2022-02-10 03:15:58,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:58,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 03:15:58,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 03:15:58,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-10 03:15:58,150 INFO L87 Difference]: Start difference. First operand 137 states and 300 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:58,248 INFO L93 Difference]: Finished difference Result 199 states and 389 transitions. [2022-02-10 03:15:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 03:15:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:58,249 INFO L225 Difference]: With dead ends: 199 [2022-02-10 03:15:58,249 INFO L226 Difference]: Without dead ends: 182 [2022-02-10 03:15:58,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-02-10 03:15:58,250 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:58,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 38 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-10 03:15:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 134. [2022-02-10 03:15:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.1203007518796992) internal successors, (282), 133 states have internal predecessors, (282), 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 03:15:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 282 transitions. [2022-02-10 03:15:58,253 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 282 transitions. Word has length 18 [2022-02-10 03:15:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:58,253 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 282 transitions. [2022-02-10 03:15:58,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 03:15:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 282 transitions. [2022-02-10 03:15:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:58,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:58,254 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 03:15:58,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 03:15:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:58,463 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -170886408, now seen corresponding path program 7 times [2022-02-10 03:15:58,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:58,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392120289] [2022-02-10 03:15:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:58,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:58,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:58,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392120289] [2022-02-10 03:15:58,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392120289] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:58,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970033826] [2022-02-10 03:15:58,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:15:58,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:58,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:58,533 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:58,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 03:15:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:58,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:58,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:58,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:58,802 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 03:15:58,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970033826] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:58,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:15:58,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-02-10 03:15:58,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653426974] [2022-02-10 03:15:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:15:58,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:15:58,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:15:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:58,804 INFO L87 Difference]: Start difference. First operand 134 states and 282 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:58,953 INFO L93 Difference]: Finished difference Result 192 states and 374 transitions. [2022-02-10 03:15:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:15:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:58,954 INFO L225 Difference]: With dead ends: 192 [2022-02-10 03:15:58,954 INFO L226 Difference]: Without dead ends: 182 [2022-02-10 03:15:58,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:15:58,954 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:58,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 48 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:15:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-10 03:15:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 132. [2022-02-10 03:15:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.1297709923664123) internal successors, (279), 131 states have internal predecessors, (279), 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 03:15:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 279 transitions. [2022-02-10 03:15:58,957 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 279 transitions. Word has length 18 [2022-02-10 03:15:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:58,957 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 279 transitions. [2022-02-10 03:15:58,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:15:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 279 transitions. [2022-02-10 03:15:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:58,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:58,958 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 03:15:58,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-10 03:15:59,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:59,163 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:15:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:15:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash -742153823, now seen corresponding path program 9 times [2022-02-10 03:15:59,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:15:59,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228943331] [2022-02-10 03:15:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:15:59,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:15:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:15:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:59,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:15:59,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228943331] [2022-02-10 03:15:59,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228943331] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:15:59,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344042782] [2022-02-10 03:15:59,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:15:59,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:15:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:15:59,210 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:15:59,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 03:15:59,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:15:59,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:15:59,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:15:59,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:15:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:59,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:15:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:15:59,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344042782] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:15:59,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:15:59,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-02-10 03:15:59,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161732498] [2022-02-10 03:15:59,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:15:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 03:15:59,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:15:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 03:15:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:15:59,586 INFO L87 Difference]: Start difference. First operand 132 states and 279 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 03:15:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:15:59,930 INFO L93 Difference]: Finished difference Result 235 states and 421 transitions. [2022-02-10 03:15:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:15:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 18 [2022-02-10 03:15:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:15:59,931 INFO L225 Difference]: With dead ends: 235 [2022-02-10 03:15:59,931 INFO L226 Difference]: Without dead ends: 184 [2022-02-10 03:15:59,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:15:59,932 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 194 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:15:59,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 135 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 03:15:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-02-10 03:15:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 126. [2022-02-10 03:15:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.096) internal successors, (262), 125 states have internal predecessors, (262), 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 03:15:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 262 transitions. [2022-02-10 03:15:59,934 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 262 transitions. Word has length 18 [2022-02-10 03:15:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:15:59,934 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 262 transitions. [2022-02-10 03:15:59,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 03:15:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 262 transitions. [2022-02-10 03:15:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 03:15:59,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:15:59,935 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 03:15:59,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:00,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:00,151 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:00,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1805931656, now seen corresponding path program 9 times [2022-02-10 03:16:00,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:00,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47177137] [2022-02-10 03:16:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:00,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:00,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:00,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47177137] [2022-02-10 03:16:00,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47177137] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:00,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664757894] [2022-02-10 03:16:00,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:16:00,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:00,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:00,220 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:00,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 03:16:00,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:16:00,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:00,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 03:16:00,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:00,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:00,497 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 03:16:00,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664757894] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:00,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 03:16:00,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 15 [2022-02-10 03:16:00,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096419055] [2022-02-10 03:16:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:16:00,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 03:16:00,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 03:16:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-10 03:16:00,499 INFO L87 Difference]: Start difference. First operand 126 states and 262 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:16:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:00,649 INFO L93 Difference]: Finished difference Result 156 states and 300 transitions. [2022-02-10 03:16:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 03:16:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:16:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:00,650 INFO L225 Difference]: With dead ends: 156 [2022-02-10 03:16:00,650 INFO L226 Difference]: Without dead ends: 146 [2022-02-10 03:16:00,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-02-10 03:16:00,650 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:00,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 63 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:16:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-02-10 03:16:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 125. [2022-02-10 03:16:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.096774193548387) internal successors, (260), 124 states have internal predecessors, (260), 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 03:16:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 260 transitions. [2022-02-10 03:16:00,653 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 260 transitions. Word has length 18 [2022-02-10 03:16:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:00,653 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 260 transitions. [2022-02-10 03:16:00,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 03:16:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 260 transitions. [2022-02-10 03:16:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:16:00,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:00,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:16:00,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-10 03:16:00,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:00,859 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1794100267, now seen corresponding path program 1 times [2022-02-10 03:16:00,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:00,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031858096] [2022-02-10 03:16:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:00,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:16:00,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:00,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031858096] [2022-02-10 03:16:00,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031858096] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:00,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905027592] [2022-02-10 03:16:00,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:00,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:00,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:00,898 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:00,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 03:16:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:00,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:16:00,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:01,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:01,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905027592] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:01,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:01,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-02-10 03:16:01,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840264470] [2022-02-10 03:16:01,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:01,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:16:01,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:16:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:16:01,147 INFO L87 Difference]: Start difference. First operand 125 states and 260 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 03:16:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:01,298 INFO L93 Difference]: Finished difference Result 169 states and 348 transitions. [2022-02-10 03:16:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 03:16:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 19 [2022-02-10 03:16:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:01,298 INFO L225 Difference]: With dead ends: 169 [2022-02-10 03:16:01,298 INFO L226 Difference]: Without dead ends: 151 [2022-02-10 03:16:01,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-02-10 03:16:01,299 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:01,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 71 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:16:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-02-10 03:16:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2022-02-10 03:16:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.074380165289256) internal successors, (251), 121 states have internal predecessors, (251), 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 03:16:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 251 transitions. [2022-02-10 03:16:01,301 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 251 transitions. Word has length 19 [2022-02-10 03:16:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:01,301 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 251 transitions. [2022-02-10 03:16:01,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 03:16:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 251 transitions. [2022-02-10 03:16:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:16:01,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:01,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:16:01,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:01,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2022-02-10 03:16:01,524 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash 843439528, now seen corresponding path program 1 times [2022-02-10 03:16:01,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:01,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827798913] [2022-02-10 03:16:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:01,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:01,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:01,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827798913] [2022-02-10 03:16:01,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827798913] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 03:16:01,581 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 03:16:01,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 03:16:01,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209256235] [2022-02-10 03:16:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 03:16:01,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 03:16:01,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 03:16:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-10 03:16:01,582 INFO L87 Difference]: Start difference. First operand 122 states and 251 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 03:16:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:01,683 INFO L93 Difference]: Finished difference Result 147 states and 292 transitions. [2022-02-10 03:16:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:16:01,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2022-02-10 03:16:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:01,684 INFO L225 Difference]: With dead ends: 147 [2022-02-10 03:16:01,684 INFO L226 Difference]: Without dead ends: 147 [2022-02-10 03:16:01,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-10 03:16:01,684 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:01,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:16:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-02-10 03:16:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2022-02-10 03:16:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 112 states have internal predecessors, (227), 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 03:16:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 227 transitions. [2022-02-10 03:16:01,686 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 227 transitions. Word has length 19 [2022-02-10 03:16:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:01,686 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 227 transitions. [2022-02-10 03:16:01,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 03:16:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 227 transitions. [2022-02-10 03:16:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 03:16:01,687 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:01,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 03:16:01,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-10 03:16:01,687 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:01,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1438123078, now seen corresponding path program 1 times [2022-02-10 03:16:01,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:01,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555182555] [2022-02-10 03:16:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:01,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 03:16:01,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:01,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555182555] [2022-02-10 03:16:01,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555182555] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:01,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992792140] [2022-02-10 03:16:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:01,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:01,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:01,728 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:01,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 03:16:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:01,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 03:16:01,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:01,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:01,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992792140] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:01,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:01,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-02-10 03:16:01,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173108188] [2022-02-10 03:16:01,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:01,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 03:16:01,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 03:16:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-10 03:16:01,987 INFO L87 Difference]: Start difference. First operand 113 states and 227 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 03:16:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:02,104 INFO L93 Difference]: Finished difference Result 134 states and 272 transitions. [2022-02-10 03:16:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 03:16:02,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 19 [2022-02-10 03:16:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:02,105 INFO L225 Difference]: With dead ends: 134 [2022-02-10 03:16:02,105 INFO L226 Difference]: Without dead ends: 129 [2022-02-10 03:16:02,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-02-10 03:16:02,105 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:02,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 03:16:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-10 03:16:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2022-02-10 03:16:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.0) internal successors, (218), 109 states have internal predecessors, (218), 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 03:16:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 218 transitions. [2022-02-10 03:16:02,108 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 218 transitions. Word has length 19 [2022-02-10 03:16:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:02,108 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 218 transitions. [2022-02-10 03:16:02,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 03:16:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 218 transitions. [2022-02-10 03:16:02,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:02,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:02,108 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] [2022-02-10 03:16:02,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 03:16:02,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:02,315 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1681795579, now seen corresponding path program 1 times [2022-02-10 03:16:02,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:02,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007870047] [2022-02-10 03:16:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:02,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:02,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:02,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007870047] [2022-02-10 03:16:02,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007870047] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:02,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244940730] [2022-02-10 03:16:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:02,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:02,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:02,616 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:02,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 03:16:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:02,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:16:02,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:03,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:03,310 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-02-10 03:16:04,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:04,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 153 [2022-02-10 03:16:04,588 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 153 treesize of output 133 [2022-02-10 03:16:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:05,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:05,623 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:05,623 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 90 treesize of output 84 [2022-02-10 03:16:06,053 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:06,053 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 118 treesize of output 108 [2022-02-10 03:16:06,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:06,062 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 100 treesize of output 90 [2022-02-10 03:16:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:06,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244940730] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:06,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:06,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:06,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265391568] [2022-02-10 03:16:06,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:06,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:06,259 INFO L87 Difference]: Start difference. First operand 110 states and 218 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:07,236 INFO L93 Difference]: Finished difference Result 202 states and 386 transitions. [2022-02-10 03:16:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:16:07,236 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:07,237 INFO L225 Difference]: With dead ends: 202 [2022-02-10 03:16:07,237 INFO L226 Difference]: Without dead ends: 187 [2022-02-10 03:16:07,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:16:07,237 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:07,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 232 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 453 Invalid, 0 Unknown, 253 Unchecked, 0.2s Time] [2022-02-10 03:16:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-02-10 03:16:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 115. [2022-02-10 03:16:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.008771929824561) internal successors, (229), 114 states have internal predecessors, (229), 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 03:16:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 229 transitions. [2022-02-10 03:16:07,240 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 229 transitions. Word has length 20 [2022-02-10 03:16:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:07,241 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 229 transitions. [2022-02-10 03:16:07,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 229 transitions. [2022-02-10 03:16:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:07,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:07,241 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] [2022-02-10 03:16:07,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-10 03:16:07,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:07,442 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1464099555, now seen corresponding path program 2 times [2022-02-10 03:16:07,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:07,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058693501] [2022-02-10 03:16:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:07,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:07,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:07,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058693501] [2022-02-10 03:16:07,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058693501] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:07,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311007300] [2022-02-10 03:16:07,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:16:07,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:07,732 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:07,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 03:16:07,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:16:07,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:07,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:07,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:08,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:08,567 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-02-10 03:16:09,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:09,459 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 180 [2022-02-10 03:16:09,462 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 180 treesize of output 158 [2022-02-10 03:16:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:11,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:11,629 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:11,635 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 90 treesize of output 84 [2022-02-10 03:16:11,999 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:11,999 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 102 treesize of output 94 [2022-02-10 03:16:12,008 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:12,009 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 86 treesize of output 78 [2022-02-10 03:16:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:12,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311007300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:12,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:12,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:12,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028641736] [2022-02-10 03:16:12,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:12,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:12,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:12,151 INFO L87 Difference]: Start difference. First operand 115 states and 229 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:13,411 INFO L93 Difference]: Finished difference Result 269 states and 505 transitions. [2022-02-10 03:16:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:16:13,412 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:13,412 INFO L225 Difference]: With dead ends: 269 [2022-02-10 03:16:13,412 INFO L226 Difference]: Without dead ends: 237 [2022-02-10 03:16:13,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:16:13,413 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 125 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:13,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 307 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 598 Invalid, 0 Unknown, 250 Unchecked, 0.3s Time] [2022-02-10 03:16:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-02-10 03:16:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 118. [2022-02-10 03:16:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.0256410256410255) internal successors, (237), 117 states have internal predecessors, (237), 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 03:16:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 237 transitions. [2022-02-10 03:16:13,415 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 237 transitions. Word has length 20 [2022-02-10 03:16:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:13,415 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 237 transitions. [2022-02-10 03:16:13,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 237 transitions. [2022-02-10 03:16:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:13,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:13,416 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] [2022-02-10 03:16:13,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:13,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:13,616 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1620813507, now seen corresponding path program 3 times [2022-02-10 03:16:13,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:13,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810321386] [2022-02-10 03:16:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:13,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:13,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:13,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810321386] [2022-02-10 03:16:13,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810321386] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:13,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784444262] [2022-02-10 03:16:13,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:16:13,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:13,863 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:13,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 03:16:13,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:16:13,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:13,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:13,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:14,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:14,644 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-02-10 03:16:15,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:15,729 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 150 [2022-02-10 03:16:15,737 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 150 treesize of output 128 [2022-02-10 03:16:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:16,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:17,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:17,040 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 103 treesize of output 95 [2022-02-10 03:16:17,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:17,386 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 102 treesize of output 94 [2022-02-10 03:16:17,397 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:17,397 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 86 treesize of output 78 [2022-02-10 03:16:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:17,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784444262] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:17,513 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:17,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:17,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322744118] [2022-02-10 03:16:17,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:17,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:17,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:17,514 INFO L87 Difference]: Start difference. First operand 118 states and 237 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:18,279 INFO L93 Difference]: Finished difference Result 212 states and 398 transitions. [2022-02-10 03:16:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:16:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:18,280 INFO L225 Difference]: With dead ends: 212 [2022-02-10 03:16:18,280 INFO L226 Difference]: Without dead ends: 197 [2022-02-10 03:16:18,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:16:18,281 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:18,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 230 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 159 Unchecked, 0.2s Time] [2022-02-10 03:16:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-02-10 03:16:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 120. [2022-02-10 03:16:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0168067226890756) internal successors, (240), 119 states have internal predecessors, (240), 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 03:16:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 240 transitions. [2022-02-10 03:16:18,283 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 240 transitions. Word has length 20 [2022-02-10 03:16:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:18,283 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 240 transitions. [2022-02-10 03:16:18,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 240 transitions. [2022-02-10 03:16:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:18,284 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:18,284 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] [2022-02-10 03:16:18,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 03:16:18,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-10 03:16:18,491 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1085583705, now seen corresponding path program 4 times [2022-02-10 03:16:18,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:18,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514777636] [2022-02-10 03:16:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:18,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:18,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:18,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514777636] [2022-02-10 03:16:18,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514777636] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:18,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120666125] [2022-02-10 03:16:18,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:16:18,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:18,744 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:18,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 03:16:18,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:16:18,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:18,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:16:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:19,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:19,398 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-02-10 03:16:19,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:19,821 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 171 [2022-02-10 03:16:19,824 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 171 treesize of output 151 [2022-02-10 03:16:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:20,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:21,134 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:21,134 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 107 treesize of output 99 [2022-02-10 03:16:21,547 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:21,547 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 113 treesize of output 105 [2022-02-10 03:16:21,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:21,555 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 97 treesize of output 89 [2022-02-10 03:16:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:21,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120666125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:21,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:21,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:21,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147154868] [2022-02-10 03:16:21,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:21,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:21,726 INFO L87 Difference]: Start difference. First operand 120 states and 240 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:22,857 INFO L93 Difference]: Finished difference Result 244 states and 436 transitions. [2022-02-10 03:16:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:16:22,858 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:22,858 INFO L225 Difference]: With dead ends: 244 [2022-02-10 03:16:22,858 INFO L226 Difference]: Without dead ends: 212 [2022-02-10 03:16:22,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:16:22,859 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 114 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:22,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 333 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 517 Invalid, 0 Unknown, 185 Unchecked, 0.3s Time] [2022-02-10 03:16:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-02-10 03:16:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 120. [2022-02-10 03:16:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0168067226890756) internal successors, (240), 119 states have internal predecessors, (240), 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 03:16:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 240 transitions. [2022-02-10 03:16:22,861 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 240 transitions. Word has length 20 [2022-02-10 03:16:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:22,861 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 240 transitions. [2022-02-10 03:16:22,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 240 transitions. [2022-02-10 03:16:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:22,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:22,862 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] [2022-02-10 03:16:22,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 03:16:23,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:23,083 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash 561725159, now seen corresponding path program 5 times [2022-02-10 03:16:23,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:23,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125722805] [2022-02-10 03:16:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:23,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:23,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:23,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125722805] [2022-02-10 03:16:23,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125722805] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:23,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420154608] [2022-02-10 03:16:23,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:16:23,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:23,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:23,316 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:23,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 03:16:23,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:16:23,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:23,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:23,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:23,691 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 92 treesize of output 78 [2022-02-10 03:16:24,237 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 143 treesize of output 125 [2022-02-10 03:16:24,239 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 125 treesize of output 107 [2022-02-10 03:16:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:24,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:25,092 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:25,092 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 104 treesize of output 96 [2022-02-10 03:16:25,511 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:16:25,511 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 90 treesize of output 77 [2022-02-10 03:16:25,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-02-10 03:16:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:25,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420154608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:25,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:25,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:16:25,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383205968] [2022-02-10 03:16:25,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:25,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:16:25,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:16:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:16:25,586 INFO L87 Difference]: Start difference. First operand 120 states and 240 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:16:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:28,429 INFO L93 Difference]: Finished difference Result 219 states and 411 transitions. [2022-02-10 03:16:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:16:28,430 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:16:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:28,430 INFO L225 Difference]: With dead ends: 219 [2022-02-10 03:16:28,430 INFO L226 Difference]: Without dead ends: 198 [2022-02-10 03:16:28,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:16:28,431 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 134 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:28,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 181 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:16:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-02-10 03:16:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 125. [2022-02-10 03:16:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.0080645161290325) internal successors, (249), 124 states have internal predecessors, (249), 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 03:16:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 249 transitions. [2022-02-10 03:16:28,433 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 249 transitions. Word has length 20 [2022-02-10 03:16:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:28,433 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 249 transitions. [2022-02-10 03:16:28,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:16:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 249 transitions. [2022-02-10 03:16:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:28,434 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:28,434 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] [2022-02-10 03:16:28,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-10 03:16:28,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:28,639 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1096954961, now seen corresponding path program 6 times [2022-02-10 03:16:28,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:28,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325513098] [2022-02-10 03:16:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:28,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:28,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:28,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325513098] [2022-02-10 03:16:28,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325513098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:28,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815993830] [2022-02-10 03:16:28,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:16:28,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:28,909 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:28,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 03:16:28,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:16:28,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:28,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:28,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:29,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:29,658 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-02-10 03:16:30,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:30,240 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 160 [2022-02-10 03:16:30,243 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 160 treesize of output 140 [2022-02-10 03:16:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:31,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:31,495 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:31,496 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 122 treesize of output 112 [2022-02-10 03:16:32,033 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:32,033 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 102 treesize of output 94 [2022-02-10 03:16:32,041 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:32,041 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 86 treesize of output 78 [2022-02-10 03:16:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:32,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815993830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:32,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:32,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:32,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159284365] [2022-02-10 03:16:32,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:32,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:32,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:32,208 INFO L87 Difference]: Start difference. First operand 125 states and 249 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:33,540 INFO L93 Difference]: Finished difference Result 238 states and 431 transitions. [2022-02-10 03:16:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:16:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:33,542 INFO L225 Difference]: With dead ends: 238 [2022-02-10 03:16:33,542 INFO L226 Difference]: Without dead ends: 199 [2022-02-10 03:16:33,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=199, Invalid=1441, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:16:33,542 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:33,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 285 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 717 Invalid, 0 Unknown, 64 Unchecked, 0.4s Time] [2022-02-10 03:16:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-02-10 03:16:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 125. [2022-02-10 03:16:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.0080645161290325) internal successors, (249), 124 states have internal predecessors, (249), 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 03:16:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 249 transitions. [2022-02-10 03:16:33,545 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 249 transitions. Word has length 20 [2022-02-10 03:16:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:33,545 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 249 transitions. [2022-02-10 03:16:33,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 249 transitions. [2022-02-10 03:16:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:33,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:33,545 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] [2022-02-10 03:16:33,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-10 03:16:33,751 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1091228215, now seen corresponding path program 7 times [2022-02-10 03:16:33,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:33,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308903222] [2022-02-10 03:16:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:33,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:34,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:34,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308903222] [2022-02-10 03:16:34,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308903222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:34,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918840992] [2022-02-10 03:16:34,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:16:34,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:34,020 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:34,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 03:16:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:34,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:16:34,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:34,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:34,684 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-02-10 03:16:35,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:35,473 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 167 [2022-02-10 03:16:35,476 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 167 treesize of output 141 [2022-02-10 03:16:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:36,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:37,005 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:37,005 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 90 treesize of output 84 [2022-02-10 03:16:37,454 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:37,454 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 113 treesize of output 105 [2022-02-10 03:16:37,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:37,461 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 97 treesize of output 89 [2022-02-10 03:16:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:37,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918840992] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:37,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:37,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:37,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586016827] [2022-02-10 03:16:37,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:37,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:37,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:37,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:37,616 INFO L87 Difference]: Start difference. First operand 125 states and 249 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:38,351 INFO L93 Difference]: Finished difference Result 215 states and 407 transitions. [2022-02-10 03:16:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:16:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:38,352 INFO L225 Difference]: With dead ends: 215 [2022-02-10 03:16:38,352 INFO L226 Difference]: Without dead ends: 203 [2022-02-10 03:16:38,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:16:38,353 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:38,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 170 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 253 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-02-10 03:16:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-10 03:16:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2022-02-10 03:16:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.0080645161290325) internal successors, (249), 124 states have internal predecessors, (249), 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 03:16:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 249 transitions. [2022-02-10 03:16:38,356 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 249 transitions. Word has length 20 [2022-02-10 03:16:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 249 transitions. [2022-02-10 03:16:38,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 249 transitions. [2022-02-10 03:16:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:38,357 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:38,357 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] [2022-02-10 03:16:38,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-10 03:16:38,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-10 03:16:38,571 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1338312107, now seen corresponding path program 8 times [2022-02-10 03:16:38,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:38,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922288454] [2022-02-10 03:16:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:38,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:38,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:38,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922288454] [2022-02-10 03:16:38,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922288454] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:38,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511018940] [2022-02-10 03:16:38,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:16:38,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:38,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:38,866 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:38,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 03:16:38,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:16:38,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:38,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:38,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:39,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:39,770 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-02-10 03:16:40,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:40,331 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 163 [2022-02-10 03:16:40,334 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 163 treesize of output 141 [2022-02-10 03:16:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:41,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:41,757 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:41,758 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 90 treesize of output 84 [2022-02-10 03:16:42,120 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:42,121 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 102 treesize of output 94 [2022-02-10 03:16:42,128 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:42,128 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 86 treesize of output 78 [2022-02-10 03:16:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:42,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511018940] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:42,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:42,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:42,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199895614] [2022-02-10 03:16:42,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:42,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:42,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:42,264 INFO L87 Difference]: Start difference. First operand 125 states and 249 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:43,613 INFO L93 Difference]: Finished difference Result 255 states and 494 transitions. [2022-02-10 03:16:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:16:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:43,614 INFO L225 Difference]: With dead ends: 255 [2022-02-10 03:16:43,614 INFO L226 Difference]: Without dead ends: 241 [2022-02-10 03:16:43,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:16:43,615 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:43,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 230 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 370 Invalid, 0 Unknown, 209 Unchecked, 0.2s Time] [2022-02-10 03:16:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-02-10 03:16:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 126. [2022-02-10 03:16:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.016) internal successors, (252), 125 states have internal predecessors, (252), 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 03:16:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 252 transitions. [2022-02-10 03:16:43,617 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 252 transitions. Word has length 20 [2022-02-10 03:16:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 252 transitions. [2022-02-10 03:16:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 252 transitions. [2022-02-10 03:16:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:43,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:43,618 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] [2022-02-10 03:16:43,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-10 03:16:43,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-10 03:16:43,818 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:43,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:43,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1700294217, now seen corresponding path program 9 times [2022-02-10 03:16:43,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:43,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699933265] [2022-02-10 03:16:43,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:43,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:44,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:44,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699933265] [2022-02-10 03:16:44,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699933265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:44,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221816687] [2022-02-10 03:16:44,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:16:44,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:44,054 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:44,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 03:16:44,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:16:44,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:44,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:44,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:44,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:44,845 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-02-10 03:16:46,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:46,256 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 146 [2022-02-10 03:16:46,259 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 146 treesize of output 128 [2022-02-10 03:16:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:46,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:47,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:47,190 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 90 treesize of output 84 [2022-02-10 03:16:47,604 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:47,604 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 102 treesize of output 94 [2022-02-10 03:16:47,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:47,613 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 86 treesize of output 78 [2022-02-10 03:16:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:47,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221816687] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:47,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:47,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:47,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550194087] [2022-02-10 03:16:47,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:47,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:47,767 INFO L87 Difference]: Start difference. First operand 126 states and 252 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:48,400 INFO L93 Difference]: Finished difference Result 246 states and 480 transitions. [2022-02-10 03:16:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:16:48,400 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:48,401 INFO L225 Difference]: With dead ends: 246 [2022-02-10 03:16:48,401 INFO L226 Difference]: Without dead ends: 232 [2022-02-10 03:16:48,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:16:48,401 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:48,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 214 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 339 Invalid, 0 Unknown, 259 Unchecked, 0.1s Time] [2022-02-10 03:16:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-02-10 03:16:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 125. [2022-02-10 03:16:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.0080645161290325) internal successors, (249), 124 states have internal predecessors, (249), 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 03:16:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 249 transitions. [2022-02-10 03:16:48,404 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 249 transitions. Word has length 20 [2022-02-10 03:16:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:48,404 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 249 transitions. [2022-02-10 03:16:48,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 249 transitions. [2022-02-10 03:16:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:48,404 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:48,404 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] [2022-02-10 03:16:48,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:48,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:48,626 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash -721420539, now seen corresponding path program 10 times [2022-02-10 03:16:48,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:48,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111277046] [2022-02-10 03:16:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:48,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:49,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:49,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111277046] [2022-02-10 03:16:49,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111277046] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:49,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891216940] [2022-02-10 03:16:49,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:16:49,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:49,010 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:49,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 03:16:49,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:16:49,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:49,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:16:49,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:49,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:49,423 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:16:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:16:54,092 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2022-02-10 03:16:54,096 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 131 treesize of output 111 [2022-02-10 03:16:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:55,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:16:55,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:55,765 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 90 treesize of output 84 [2022-02-10 03:16:56,092 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:56,093 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 113 treesize of output 105 [2022-02-10 03:16:56,099 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:16:56,100 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 97 treesize of output 89 [2022-02-10 03:16:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:56,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891216940] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:16:56,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:16:56,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:16:56,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208504565] [2022-02-10 03:16:56,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:16:56,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:16:56,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:16:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:16:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:16:56,249 INFO L87 Difference]: Start difference. First operand 125 states and 249 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:16:56,922 INFO L93 Difference]: Finished difference Result 169 states and 352 transitions. [2022-02-10 03:16:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:16:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:16:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:16:56,922 INFO L225 Difference]: With dead ends: 169 [2022-02-10 03:16:56,923 INFO L226 Difference]: Without dead ends: 154 [2022-02-10 03:16:56,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:16:56,923 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:16:56,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 128 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 328 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-02-10 03:16:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-02-10 03:16:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 129. [2022-02-10 03:16:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 2.0234375) internal successors, (259), 128 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:16:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 259 transitions. [2022-02-10 03:16:56,925 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 259 transitions. Word has length 20 [2022-02-10 03:16:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:16:56,925 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 259 transitions. [2022-02-10 03:16:56,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:16:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 259 transitions. [2022-02-10 03:16:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:16:56,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:16:56,926 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] [2022-02-10 03:16:56,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 03:16:57,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-02-10 03:16:57,127 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:16:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:16:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1870492701, now seen corresponding path program 11 times [2022-02-10 03:16:57,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:16:57,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024094342] [2022-02-10 03:16:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:16:57,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:16:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:16:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:57,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:16:57,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024094342] [2022-02-10 03:16:57,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024094342] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:16:57,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838763014] [2022-02-10 03:16:57,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:16:57,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:16:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:16:57,463 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:16:57,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 03:16:57,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:16:57,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:16:57,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:16:57,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:16:57,627 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 121 treesize of output 103 [2022-02-10 03:16:58,545 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 192 treesize of output 168 [2022-02-10 03:16:58,547 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 168 treesize of output 144 [2022-02-10 03:16:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:16:59,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:00,231 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:00,232 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 148 treesize of output 134 [2022-02-10 03:17:00,812 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:17:00,812 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 95 treesize of output 82 [2022-02-10 03:17:00,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2022-02-10 03:17:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:00,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838763014] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:00,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:00,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:17:00,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780099941] [2022-02-10 03:17:00,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:00,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:17:00,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:17:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:17:00,821 INFO L87 Difference]: Start difference. First operand 129 states and 259 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:17:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:06,513 INFO L93 Difference]: Finished difference Result 298 states and 547 transitions. [2022-02-10 03:17:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:17:06,514 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:17:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:06,514 INFO L225 Difference]: With dead ends: 298 [2022-02-10 03:17:06,514 INFO L226 Difference]: Without dead ends: 286 [2022-02-10 03:17:06,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=286, Invalid=1274, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:17:06,515 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 316 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:06,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 161 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:17:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-02-10 03:17:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 130. [2022-02-10 03:17:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.0155038759689923) internal successors, (260), 129 states have internal predecessors, (260), 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 03:17:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 260 transitions. [2022-02-10 03:17:06,518 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 260 transitions. Word has length 20 [2022-02-10 03:17:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:06,518 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 260 transitions. [2022-02-10 03:17:06,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:17:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 260 transitions. [2022-02-10 03:17:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:06,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:06,519 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] [2022-02-10 03:17:06,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 03:17:06,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-02-10 03:17:06,731 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash 559047621, now seen corresponding path program 12 times [2022-02-10 03:17:06,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:06,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169989001] [2022-02-10 03:17:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:06,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:07,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:07,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169989001] [2022-02-10 03:17:07,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169989001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:07,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944808057] [2022-02-10 03:17:07,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:17:07,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:07,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:07,002 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:07,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 03:17:07,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:17:07,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:07,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:17:07,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:07,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:07,356 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:17:10,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:10,223 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 161 [2022-02-10 03:17:10,241 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 161 treesize of output 135 [2022-02-10 03:17:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:11,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:12,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:12,428 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 90 treesize of output 84 [2022-02-10 03:17:12,879 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:12,880 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 113 treesize of output 105 [2022-02-10 03:17:12,890 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:12,890 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 97 treesize of output 89 [2022-02-10 03:17:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:13,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944808057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:13,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:13,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:13,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190217981] [2022-02-10 03:17:13,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:13,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:13,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:13,064 INFO L87 Difference]: Start difference. First operand 130 states and 260 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:14,427 INFO L93 Difference]: Finished difference Result 197 states and 388 transitions. [2022-02-10 03:17:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:17:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:14,427 INFO L225 Difference]: With dead ends: 197 [2022-02-10 03:17:14,428 INFO L226 Difference]: Without dead ends: 178 [2022-02-10 03:17:14,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:17:14,428 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:14,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 229 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 451 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-02-10 03:17:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-02-10 03:17:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2022-02-10 03:17:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.0381679389312977) internal successors, (267), 131 states have internal predecessors, (267), 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 03:17:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 267 transitions. [2022-02-10 03:17:14,431 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 267 transitions. Word has length 20 [2022-02-10 03:17:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:14,431 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 267 transitions. [2022-02-10 03:17:14,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 267 transitions. [2022-02-10 03:17:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:14,431 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:14,431 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] [2022-02-10 03:17:14,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 03:17:14,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-02-10 03:17:14,635 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 132420707, now seen corresponding path program 13 times [2022-02-10 03:17:14,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:14,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961212737] [2022-02-10 03:17:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:14,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:14,866 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:14,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961212737] [2022-02-10 03:17:14,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961212737] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:14,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488447947] [2022-02-10 03:17:14,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:17:14,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:14,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:14,868 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:14,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 03:17:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:14,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:17:14,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:15,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:15,251 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:17:17,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:17,342 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2022-02-10 03:17:17,344 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 145 treesize of output 125 [2022-02-10 03:17:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:17,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:18,385 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:18,385 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 90 treesize of output 84 [2022-02-10 03:17:18,647 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:18,648 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 102 treesize of output 94 [2022-02-10 03:17:18,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:18,656 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 86 treesize of output 78 [2022-02-10 03:17:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:18,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488447947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:18,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:18,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:18,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682509285] [2022-02-10 03:17:18,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:18,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:18,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:18,782 INFO L87 Difference]: Start difference. First operand 132 states and 267 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:19,774 INFO L93 Difference]: Finished difference Result 220 states and 437 transitions. [2022-02-10 03:17:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:17:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:19,775 INFO L225 Difference]: With dead ends: 220 [2022-02-10 03:17:19,775 INFO L226 Difference]: Without dead ends: 203 [2022-02-10 03:17:19,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:17:19,775 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:19,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 223 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 544 Invalid, 0 Unknown, 308 Unchecked, 0.2s Time] [2022-02-10 03:17:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-10 03:17:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 133. [2022-02-10 03:17:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.037878787878788) internal successors, (269), 132 states have internal predecessors, (269), 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 03:17:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 269 transitions. [2022-02-10 03:17:19,777 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 269 transitions. Word has length 20 [2022-02-10 03:17:19,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:19,777 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 269 transitions. [2022-02-10 03:17:19,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 269 transitions. [2022-02-10 03:17:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:19,777 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:19,778 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] [2022-02-10 03:17:19,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 03:17:19,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-02-10 03:17:19,978 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1336204963, now seen corresponding path program 14 times [2022-02-10 03:17:19,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:19,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655905122] [2022-02-10 03:17:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:19,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:20,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:20,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655905122] [2022-02-10 03:17:20,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655905122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:20,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684497368] [2022-02-10 03:17:20,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:17:20,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:20,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:20,300 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:20,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 03:17:20,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:17:20,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:17:20,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:20,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:20,840 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:17:23,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:23,372 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 150 [2022-02-10 03:17:23,375 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 150 treesize of output 124 [2022-02-10 03:17:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:24,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:25,570 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:25,571 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 104 treesize of output 96 [2022-02-10 03:17:26,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:26,059 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 129 treesize of output 117 [2022-02-10 03:17:26,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:26,071 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 109 treesize of output 97 [2022-02-10 03:17:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:26,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684497368] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:26,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:26,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:26,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731163202] [2022-02-10 03:17:26,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:26,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:26,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:26,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:26,215 INFO L87 Difference]: Start difference. First operand 133 states and 269 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:26,948 INFO L93 Difference]: Finished difference Result 179 states and 374 transitions. [2022-02-10 03:17:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 03:17:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:26,949 INFO L225 Difference]: With dead ends: 179 [2022-02-10 03:17:26,949 INFO L226 Difference]: Without dead ends: 167 [2022-02-10 03:17:26,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:17:26,949 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:26,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 183 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 367 Invalid, 0 Unknown, 151 Unchecked, 0.2s Time] [2022-02-10 03:17:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-02-10 03:17:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2022-02-10 03:17:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.037037037037037) internal successors, (275), 135 states have internal predecessors, (275), 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 03:17:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 275 transitions. [2022-02-10 03:17:26,951 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 275 transitions. Word has length 20 [2022-02-10 03:17:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:26,951 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 275 transitions. [2022-02-10 03:17:26,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 275 transitions. [2022-02-10 03:17:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:26,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:26,952 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] [2022-02-10 03:17:26,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 03:17:27,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:27,159 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash 60666821, now seen corresponding path program 15 times [2022-02-10 03:17:27,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:27,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064282538] [2022-02-10 03:17:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:27,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:27,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:27,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064282538] [2022-02-10 03:17:27,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064282538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:27,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356891805] [2022-02-10 03:17:27,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:17:27,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:27,441 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:27,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 03:17:27,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:17:27,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:27,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:17:27,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:27,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:27,803 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:17:30,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:30,743 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 160 [2022-02-10 03:17:30,747 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 160 treesize of output 136 [2022-02-10 03:17:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:32,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:33,035 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:33,036 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 139 treesize of output 127 [2022-02-10 03:17:33,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:33,400 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 118 treesize of output 108 [2022-02-10 03:17:33,407 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:33,407 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 100 treesize of output 90 [2022-02-10 03:17:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:33,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356891805] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:33,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:33,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:33,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072795276] [2022-02-10 03:17:33,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:33,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:33,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:33,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:33,566 INFO L87 Difference]: Start difference. First operand 136 states and 275 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:34,432 INFO L93 Difference]: Finished difference Result 187 states and 398 transitions. [2022-02-10 03:17:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:17:34,432 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:34,432 INFO L225 Difference]: With dead ends: 187 [2022-02-10 03:17:34,432 INFO L226 Difference]: Without dead ends: 173 [2022-02-10 03:17:34,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:17:34,433 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:34,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 167 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 616 Invalid, 0 Unknown, 160 Unchecked, 0.3s Time] [2022-02-10 03:17:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-10 03:17:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 132. [2022-02-10 03:17:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.0381679389312977) internal successors, (267), 131 states have internal predecessors, (267), 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 03:17:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 267 transitions. [2022-02-10 03:17:34,436 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 267 transitions. Word has length 20 [2022-02-10 03:17:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:34,436 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 267 transitions. [2022-02-10 03:17:34,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 267 transitions. [2022-02-10 03:17:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:34,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:34,437 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] [2022-02-10 03:17:34,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 03:17:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:34,647 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1713941503, now seen corresponding path program 16 times [2022-02-10 03:17:34,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:34,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212109887] [2022-02-10 03:17:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:34,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:34,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212109887] [2022-02-10 03:17:34,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212109887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:34,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291829355] [2022-02-10 03:17:34,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:17:34,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:34,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:34,891 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:34,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 03:17:34,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:17:34,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:34,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:17:34,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:35,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:35,260 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:17:36,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:36,567 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 148 [2022-02-10 03:17:36,570 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 148 treesize of output 122 [2022-02-10 03:17:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:37,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:38,705 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:38,706 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 90 treesize of output 84 [2022-02-10 03:17:39,099 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:39,100 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 113 treesize of output 105 [2022-02-10 03:17:39,106 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:39,106 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 97 treesize of output 89 [2022-02-10 03:17:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:39,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291829355] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:39,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:39,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:39,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219388766] [2022-02-10 03:17:39,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:39,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:39,248 INFO L87 Difference]: Start difference. First operand 132 states and 267 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:40,154 INFO L93 Difference]: Finished difference Result 201 states and 434 transitions. [2022-02-10 03:17:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:17:40,155 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:40,155 INFO L225 Difference]: With dead ends: 201 [2022-02-10 03:17:40,155 INFO L226 Difference]: Without dead ends: 195 [2022-02-10 03:17:40,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:17:40,156 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:40,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 182 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 506 Invalid, 0 Unknown, 181 Unchecked, 0.2s Time] [2022-02-10 03:17:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-02-10 03:17:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 135. [2022-02-10 03:17:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.074626865671642) internal successors, (278), 134 states have internal predecessors, (278), 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 03:17:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 278 transitions. [2022-02-10 03:17:40,158 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 278 transitions. Word has length 20 [2022-02-10 03:17:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:40,158 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 278 transitions. [2022-02-10 03:17:40,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 278 transitions. [2022-02-10 03:17:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:40,158 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:40,158 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] [2022-02-10 03:17:40,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-10 03:17:40,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-02-10 03:17:40,359 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2075923613, now seen corresponding path program 17 times [2022-02-10 03:17:40,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:40,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88984067] [2022-02-10 03:17:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:40,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:40,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88984067] [2022-02-10 03:17:40,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88984067] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741342329] [2022-02-10 03:17:40,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:17:40,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:40,688 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:40,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 03:17:40,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 03:17:40,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:40,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:17:40,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:40,879 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 129 treesize of output 109 [2022-02-10 03:17:41,465 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 180 treesize of output 156 [2022-02-10 03:17:41,468 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 156 treesize of output 132 [2022-02-10 03:17:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:43,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:44,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:44,058 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 78 treesize of output 72 [2022-02-10 03:17:44,497 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:17:44,497 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 104 treesize of output 91 [2022-02-10 03:17:44,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 72 [2022-02-10 03:17:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:44,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741342329] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:44,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:44,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:17:44,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124056365] [2022-02-10 03:17:44,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:44,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:17:44,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:17:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:17:44,558 INFO L87 Difference]: Start difference. First operand 135 states and 278 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:17:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:51,290 INFO L93 Difference]: Finished difference Result 462 states and 864 transitions. [2022-02-10 03:17:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-10 03:17:51,290 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:17:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:51,291 INFO L225 Difference]: With dead ends: 462 [2022-02-10 03:17:51,291 INFO L226 Difference]: Without dead ends: 434 [2022-02-10 03:17:51,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=532, Invalid=2548, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 03:17:51,291 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 407 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:51,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 288 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 03:17:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-02-10 03:17:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 147. [2022-02-10 03:17:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.184931506849315) internal successors, (319), 146 states have internal predecessors, (319), 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 03:17:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 319 transitions. [2022-02-10 03:17:51,294 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 319 transitions. Word has length 20 [2022-02-10 03:17:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:51,294 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 319 transitions. [2022-02-10 03:17:51,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:17:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 319 transitions. [2022-02-10 03:17:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:51,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:51,294 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] [2022-02-10 03:17:51,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-10 03:17:51,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-10 03:17:51,495 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:51,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 854550691, now seen corresponding path program 18 times [2022-02-10 03:17:51,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:51,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569651101] [2022-02-10 03:17:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:51,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:51,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:51,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569651101] [2022-02-10 03:17:51,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569651101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:51,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049692117] [2022-02-10 03:17:51,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:17:51,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:51,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:51,780 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:51,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 03:17:51,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:17:51,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:17:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:17:51,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:52,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:52,154 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:17:53,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:53,086 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 162 [2022-02-10 03:17:53,089 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 162 treesize of output 136 [2022-02-10 03:17:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:54,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:17:55,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:55,253 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 109 treesize of output 101 [2022-02-10 03:17:55,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:55,617 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 133 treesize of output 121 [2022-02-10 03:17:55,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:17:55,624 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 113 treesize of output 101 [2022-02-10 03:17:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:55,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049692117] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:17:55,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:17:55,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:17:55,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721595862] [2022-02-10 03:17:55,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:17:55,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:17:55,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:17:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:17:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:17:55,832 INFO L87 Difference]: Start difference. First operand 147 states and 319 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:17:56,959 INFO L93 Difference]: Finished difference Result 212 states and 455 transitions. [2022-02-10 03:17:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:17:56,963 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:17:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:17:56,963 INFO L225 Difference]: With dead ends: 212 [2022-02-10 03:17:56,963 INFO L226 Difference]: Without dead ends: 206 [2022-02-10 03:17:56,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:17:56,964 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:17:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 567 Invalid, 0 Unknown, 170 Unchecked, 0.3s Time] [2022-02-10 03:17:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-10 03:17:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 148. [2022-02-10 03:17:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.17687074829932) internal successors, (320), 147 states have internal predecessors, (320), 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 03:17:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 320 transitions. [2022-02-10 03:17:56,967 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 320 transitions. Word has length 20 [2022-02-10 03:17:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:17:56,967 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 320 transitions. [2022-02-10 03:17:56,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:17:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 320 transitions. [2022-02-10 03:17:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:17:56,967 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:17:56,967 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] [2022-02-10 03:17:56,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 03:17:57,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-10 03:17:57,183 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:17:57,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:17:57,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1010876283, now seen corresponding path program 19 times [2022-02-10 03:17:57,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:17:57,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935827585] [2022-02-10 03:17:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:17:57,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:17:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:17:57,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:17:57,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935827585] [2022-02-10 03:17:57,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935827585] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:17:57,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806651868] [2022-02-10 03:17:57,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:17:57,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:17:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:17:57,587 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:17:57,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 03:17:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:17:57,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:17:57,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:17:57,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:57,965 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:17:59,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:17:59,363 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 156 [2022-02-10 03:17:59,367 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 156 treesize of output 130 [2022-02-10 03:18:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:01,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:02,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:02,018 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 130 treesize of output 120 [2022-02-10 03:18:02,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:02,504 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 118 treesize of output 108 [2022-02-10 03:18:02,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:02,510 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 100 treesize of output 90 [2022-02-10 03:18:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:02,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806651868] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:02,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:02,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:02,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170112651] [2022-02-10 03:18:02,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:02,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:02,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:02,658 INFO L87 Difference]: Start difference. First operand 148 states and 320 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:04,228 INFO L93 Difference]: Finished difference Result 228 states and 473 transitions. [2022-02-10 03:18:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:18:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:04,229 INFO L225 Difference]: With dead ends: 228 [2022-02-10 03:18:04,229 INFO L226 Difference]: Without dead ends: 214 [2022-02-10 03:18:04,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:18:04,230 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:04,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 204 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 599 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2022-02-10 03:18:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-02-10 03:18:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 147. [2022-02-10 03:18:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.184931506849315) internal successors, (319), 146 states have internal predecessors, (319), 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 03:18:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 319 transitions. [2022-02-10 03:18:04,232 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 319 transitions. Word has length 20 [2022-02-10 03:18:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:04,232 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 319 transitions. [2022-02-10 03:18:04,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 319 transitions. [2022-02-10 03:18:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:04,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:04,232 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] [2022-02-10 03:18:04,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:04,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:04,447 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 652580195, now seen corresponding path program 20 times [2022-02-10 03:18:04,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:04,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145269099] [2022-02-10 03:18:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:04,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:04,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:04,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145269099] [2022-02-10 03:18:04,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145269099] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:04,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734968319] [2022-02-10 03:18:04,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:18:04,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:04,728 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:04,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 03:18:04,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:18:04,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:04,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:18:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:05,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:05,233 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:18:07,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:07,398 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 165 [2022-02-10 03:18:07,402 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 165 treesize of output 139 [2022-02-10 03:18:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:09,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:10,189 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:10,190 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 90 treesize of output 84 [2022-02-10 03:18:10,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:10,444 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 102 treesize of output 94 [2022-02-10 03:18:10,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:10,451 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 86 treesize of output 78 [2022-02-10 03:18:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:10,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734968319] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:10,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:10,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:10,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652005216] [2022-02-10 03:18:10,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:10,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:10,570 INFO L87 Difference]: Start difference. First operand 147 states and 319 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:11,818 INFO L93 Difference]: Finished difference Result 226 states and 484 transitions. [2022-02-10 03:18:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:18:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:11,819 INFO L225 Difference]: With dead ends: 226 [2022-02-10 03:18:11,819 INFO L226 Difference]: Without dead ends: 203 [2022-02-10 03:18:11,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:18:11,819 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:11,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 195 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 733 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-02-10 03:18:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-10 03:18:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 149. [2022-02-10 03:18:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.222972972972973) internal successors, (329), 148 states have internal predecessors, (329), 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 03:18:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 329 transitions. [2022-02-10 03:18:11,821 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 329 transitions. Word has length 20 [2022-02-10 03:18:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:11,821 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 329 transitions. [2022-02-10 03:18:11,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 329 transitions. [2022-02-10 03:18:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:11,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:11,822 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] [2022-02-10 03:18:11,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:12,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:12,022 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:12,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash -166952131, now seen corresponding path program 21 times [2022-02-10 03:18:12,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:12,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068584073] [2022-02-10 03:18:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:12,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:12,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:12,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068584073] [2022-02-10 03:18:12,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068584073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:12,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173157163] [2022-02-10 03:18:12,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:18:12,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:12,277 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:12,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 03:18:12,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:18:12,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:18:12,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:12,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:12,778 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:18:14,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:14,322 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 138 [2022-02-10 03:18:14,325 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 138 treesize of output 116 [2022-02-10 03:18:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:15,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:15,867 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:15,868 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 189 treesize of output 169 [2022-02-10 03:18:16,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:16,556 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 128 treesize of output 116 [2022-02-10 03:18:16,563 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:16,564 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 108 treesize of output 96 [2022-02-10 03:18:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:16,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173157163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:16,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:16,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:16,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350430083] [2022-02-10 03:18:16,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:16,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:16,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:16,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:16,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:16,775 INFO L87 Difference]: Start difference. First operand 149 states and 329 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:17,477 INFO L93 Difference]: Finished difference Result 198 states and 443 transitions. [2022-02-10 03:18:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:18:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:17,478 INFO L225 Difference]: With dead ends: 198 [2022-02-10 03:18:17,478 INFO L226 Difference]: Without dead ends: 192 [2022-02-10 03:18:17,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:18:17,478 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:17,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 108 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 190 Unchecked, 0.2s Time] [2022-02-10 03:18:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-10 03:18:17,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 153. [2022-02-10 03:18:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2302631578947367) internal successors, (339), 152 states have internal predecessors, (339), 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 03:18:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 339 transitions. [2022-02-10 03:18:17,481 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 339 transitions. Word has length 20 [2022-02-10 03:18:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:17,481 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 339 transitions. [2022-02-10 03:18:17,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 339 transitions. [2022-02-10 03:18:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:17,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:17,482 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] [2022-02-10 03:18:17,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 03:18:17,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-02-10 03:18:17,697 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1507007451, now seen corresponding path program 22 times [2022-02-10 03:18:17,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:17,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281881213] [2022-02-10 03:18:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:17,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:17,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:17,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281881213] [2022-02-10 03:18:17,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281881213] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:17,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801764022] [2022-02-10 03:18:17,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:18:17,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:17,978 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:18,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 03:18:18,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:18:18,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:18,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:18:18,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:18,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:18,498 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:18:20,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:20,165 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 143 [2022-02-10 03:18:20,169 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 143 treesize of output 123 [2022-02-10 03:18:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:21,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:22,399 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:22,400 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 135 treesize of output 127 [2022-02-10 03:18:23,118 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:23,118 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 118 treesize of output 108 [2022-02-10 03:18:23,126 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:23,126 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 100 treesize of output 90 [2022-02-10 03:18:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:23,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801764022] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:23,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:23,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:23,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476234903] [2022-02-10 03:18:23,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:23,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:23,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:23,298 INFO L87 Difference]: Start difference. First operand 153 states and 339 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:24,132 INFO L93 Difference]: Finished difference Result 220 states and 480 transitions. [2022-02-10 03:18:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:18:24,132 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:24,132 INFO L225 Difference]: With dead ends: 220 [2022-02-10 03:18:24,132 INFO L226 Difference]: Without dead ends: 196 [2022-02-10 03:18:24,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:18:24,133 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:24,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 194 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 586 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2022-02-10 03:18:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-10 03:18:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 153. [2022-02-10 03:18:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2302631578947367) internal successors, (339), 152 states have internal predecessors, (339), 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 03:18:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 339 transitions. [2022-02-10 03:18:24,136 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 339 transitions. Word has length 20 [2022-02-10 03:18:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:24,136 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 339 transitions. [2022-02-10 03:18:24,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 339 transitions. [2022-02-10 03:18:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:24,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:24,136 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] [2022-02-10 03:18:24,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:24,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-02-10 03:18:24,339 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2146894555, now seen corresponding path program 23 times [2022-02-10 03:18:24,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:24,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128182057] [2022-02-10 03:18:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:24,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:24,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:24,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128182057] [2022-02-10 03:18:24,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128182057] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:24,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97811423] [2022-02-10 03:18:24,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:18:24,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:24,651 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 03:18:24,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:18:24,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:18:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:24,972 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 109 treesize of output 91 [2022-02-10 03:18:26,165 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 142 treesize of output 124 [2022-02-10 03:18:26,168 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 124 treesize of output 106 [2022-02-10 03:18:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:26,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:27,232 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:27,233 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 135 treesize of output 127 [2022-02-10 03:18:27,774 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:18:27,775 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 114 treesize of output 97 [2022-02-10 03:18:27,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 74 [2022-02-10 03:18:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:27,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97811423] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:27,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:27,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:18:27,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891031841] [2022-02-10 03:18:27,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:27,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:18:27,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:18:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:18:27,820 INFO L87 Difference]: Start difference. First operand 153 states and 339 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:18:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:29,862 INFO L93 Difference]: Finished difference Result 265 states and 545 transitions. [2022-02-10 03:18:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:18:29,862 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:18:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:29,863 INFO L225 Difference]: With dead ends: 265 [2022-02-10 03:18:29,863 INFO L226 Difference]: Without dead ends: 253 [2022-02-10 03:18:29,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=235, Invalid=1325, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:18:29,863 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 86 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:29,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 164 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:18:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-10 03:18:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 156. [2022-02-10 03:18:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.2451612903225806) internal successors, (348), 155 states have internal predecessors, (348), 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 03:18:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 348 transitions. [2022-02-10 03:18:29,866 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 348 transitions. Word has length 20 [2022-02-10 03:18:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 348 transitions. [2022-02-10 03:18:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:18:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 348 transitions. [2022-02-10 03:18:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:29,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:29,867 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] [2022-02-10 03:18:29,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:30,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-10 03:18:30,084 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1612842939, now seen corresponding path program 24 times [2022-02-10 03:18:30,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:30,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180814252] [2022-02-10 03:18:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:30,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:30,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:30,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180814252] [2022-02-10 03:18:30,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180814252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:30,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159707405] [2022-02-10 03:18:30,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:18:30,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:30,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:30,438 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:30,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 03:18:30,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:18:30,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:30,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:18:30,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:31,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:31,058 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:18:32,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:32,716 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 141 [2022-02-10 03:18:32,720 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 141 treesize of output 121 [2022-02-10 03:18:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:34,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:35,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:35,328 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 122 treesize of output 112 [2022-02-10 03:18:36,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:36,270 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 160 treesize of output 144 [2022-02-10 03:18:36,281 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:36,282 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 136 treesize of output 120 [2022-02-10 03:18:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:36,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159707405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:36,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:36,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:36,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303420097] [2022-02-10 03:18:36,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:36,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:36,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:36,552 INFO L87 Difference]: Start difference. First operand 156 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:38,131 INFO L93 Difference]: Finished difference Result 238 states and 498 transitions. [2022-02-10 03:18:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:18:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:38,132 INFO L225 Difference]: With dead ends: 238 [2022-02-10 03:18:38,132 INFO L226 Difference]: Without dead ends: 206 [2022-02-10 03:18:38,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:18:38,133 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 100 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:38,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 251 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 539 Invalid, 0 Unknown, 92 Unchecked, 0.3s Time] [2022-02-10 03:18:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-10 03:18:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 158. [2022-02-10 03:18:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.2420382165605095) internal successors, (352), 157 states have internal predecessors, (352), 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 03:18:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 352 transitions. [2022-02-10 03:18:38,135 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 352 transitions. Word has length 20 [2022-02-10 03:18:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:38,135 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 352 transitions. [2022-02-10 03:18:38,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 352 transitions. [2022-02-10 03:18:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:38,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:38,135 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] [2022-02-10 03:18:38,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:38,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:38,336 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 466771653, now seen corresponding path program 25 times [2022-02-10 03:18:38,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:38,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339617880] [2022-02-10 03:18:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:38,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:38,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:38,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339617880] [2022-02-10 03:18:38,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339617880] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:38,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63722618] [2022-02-10 03:18:38,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:18:38,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:38,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:38,645 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:38,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 03:18:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:38,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:18:38,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:39,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:39,167 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:18:39,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:39,943 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 146 [2022-02-10 03:18:39,946 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 146 treesize of output 124 [2022-02-10 03:18:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:41,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:43,184 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:43,185 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 187 treesize of output 171 [2022-02-10 03:18:43,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:43,911 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 147 treesize of output 133 [2022-02-10 03:18:43,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:43,917 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 125 treesize of output 111 [2022-02-10 03:18:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:44,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63722618] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:44,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:44,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:44,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601111466] [2022-02-10 03:18:44,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:44,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:44,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:44,073 INFO L87 Difference]: Start difference. First operand 158 states and 352 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:44,739 INFO L93 Difference]: Finished difference Result 225 states and 497 transitions. [2022-02-10 03:18:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:18:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:44,740 INFO L225 Difference]: With dead ends: 225 [2022-02-10 03:18:44,740 INFO L226 Difference]: Without dead ends: 219 [2022-02-10 03:18:44,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:18:44,740 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 57 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:44,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 86 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 288 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-02-10 03:18:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-02-10 03:18:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 160. [2022-02-10 03:18:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.2767295597484276) internal successors, (362), 159 states have internal predecessors, (362), 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 03:18:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 362 transitions. [2022-02-10 03:18:44,742 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 362 transitions. Word has length 20 [2022-02-10 03:18:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:44,742 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 362 transitions. [2022-02-10 03:18:44,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 362 transitions. [2022-02-10 03:18:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:44,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:44,743 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] [2022-02-10 03:18:44,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-10 03:18:44,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:44,943 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 104789543, now seen corresponding path program 26 times [2022-02-10 03:18:44,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:44,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405305911] [2022-02-10 03:18:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:44,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:45,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:45,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405305911] [2022-02-10 03:18:45,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405305911] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:45,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733578470] [2022-02-10 03:18:45,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:18:45,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:45,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:45,296 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:45,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 03:18:45,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:18:45,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:45,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:18:45,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:45,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:45,905 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:18:46,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:46,487 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 161 [2022-02-10 03:18:46,490 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 161 treesize of output 137 [2022-02-10 03:18:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:47,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:48,541 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:48,542 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 123 treesize of output 115 [2022-02-10 03:18:48,966 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:48,967 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 113 treesize of output 105 [2022-02-10 03:18:48,973 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:48,973 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 97 treesize of output 89 [2022-02-10 03:18:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:49,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733578470] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:49,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:49,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:49,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930456420] [2022-02-10 03:18:49,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:49,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:49,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:49,132 INFO L87 Difference]: Start difference. First operand 160 states and 362 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:50,474 INFO L93 Difference]: Finished difference Result 235 states and 535 transitions. [2022-02-10 03:18:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:18:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:50,475 INFO L225 Difference]: With dead ends: 235 [2022-02-10 03:18:50,475 INFO L226 Difference]: Without dead ends: 220 [2022-02-10 03:18:50,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:18:50,475 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:50,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 231 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 535 Invalid, 0 Unknown, 97 Unchecked, 0.3s Time] [2022-02-10 03:18:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-02-10 03:18:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 161. [2022-02-10 03:18:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.3) internal successors, (368), 160 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 03:18:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 368 transitions. [2022-02-10 03:18:50,477 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 368 transitions. Word has length 20 [2022-02-10 03:18:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:50,477 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 368 transitions. [2022-02-10 03:18:50,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 368 transitions. [2022-02-10 03:18:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:50,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:50,478 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] [2022-02-10 03:18:50,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 03:18:50,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:50,678 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1259703449, now seen corresponding path program 27 times [2022-02-10 03:18:50,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:50,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420173950] [2022-02-10 03:18:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:50,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:50,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:50,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420173950] [2022-02-10 03:18:50,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420173950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:50,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928927621] [2022-02-10 03:18:50,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:18:50,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:50,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:50,981 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:51,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 03:18:51,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:18:51,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:18:51,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:51,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:51,716 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:18:52,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:52,449 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 139 [2022-02-10 03:18:52,452 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 139 treesize of output 115 [2022-02-10 03:18:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:54,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:18:54,895 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:54,896 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 107 treesize of output 99 [2022-02-10 03:18:55,817 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:55,818 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 133 treesize of output 121 [2022-02-10 03:18:55,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:18:55,825 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 113 treesize of output 101 [2022-02-10 03:18:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:56,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928927621] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:18:56,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:18:56,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:18:56,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261469974] [2022-02-10 03:18:56,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:18:56,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:18:56,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:18:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:18:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:18:56,071 INFO L87 Difference]: Start difference. First operand 161 states and 368 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:18:57,007 INFO L93 Difference]: Finished difference Result 229 states and 513 transitions. [2022-02-10 03:18:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:18:57,007 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:18:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:18:57,008 INFO L225 Difference]: With dead ends: 229 [2022-02-10 03:18:57,008 INFO L226 Difference]: Without dead ends: 223 [2022-02-10 03:18:57,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:18:57,008 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:18:57,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 144 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 420 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-02-10 03:18:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-10 03:18:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 162. [2022-02-10 03:18:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.2919254658385095) internal successors, (369), 161 states have internal predecessors, (369), 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 03:18:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2022-02-10 03:18:57,012 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 20 [2022-02-10 03:18:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:18:57,012 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2022-02-10 03:18:57,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:18:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2022-02-10 03:18:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:18:57,013 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:18:57,013 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] [2022-02-10 03:18:57,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-10 03:18:57,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-10 03:18:57,227 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:18:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:18:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1169836873, now seen corresponding path program 28 times [2022-02-10 03:18:57,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:18:57,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835764539] [2022-02-10 03:18:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:18:57,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:18:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:18:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:18:57,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:18:57,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835764539] [2022-02-10 03:18:57,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835764539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:18:57,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792211764] [2022-02-10 03:18:57,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:18:57,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:18:57,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:18:57,518 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:18:57,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 03:18:57,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:18:57,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:18:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:18:57,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:18:58,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:58,125 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:18:59,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:18:59,184 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 141 [2022-02-10 03:18:59,188 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 141 treesize of output 119 [2022-02-10 03:19:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:03,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:03,882 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:03,883 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 103 treesize of output 95 [2022-02-10 03:19:04,274 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:04,275 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 101 treesize of output 93 [2022-02-10 03:19:04,282 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:04,282 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 85 treesize of output 77 [2022-02-10 03:19:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:04,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792211764] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:04,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:04,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:04,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916332574] [2022-02-10 03:19:04,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:04,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:04,399 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:06,020 INFO L93 Difference]: Finished difference Result 296 states and 613 transitions. [2022-02-10 03:19:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 03:19:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:06,021 INFO L225 Difference]: With dead ends: 296 [2022-02-10 03:19:06,021 INFO L226 Difference]: Without dead ends: 272 [2022-02-10 03:19:06,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:19:06,022 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:06,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 305 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 656 Invalid, 0 Unknown, 179 Unchecked, 0.3s Time] [2022-02-10 03:19:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-10 03:19:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 164. [2022-02-10 03:19:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.3067484662576687) internal successors, (376), 163 states have internal predecessors, (376), 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 03:19:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 376 transitions. [2022-02-10 03:19:06,024 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 376 transitions. Word has length 20 [2022-02-10 03:19:06,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:06,024 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 376 transitions. [2022-02-10 03:19:06,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 376 transitions. [2022-02-10 03:19:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:06,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:06,024 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] [2022-02-10 03:19:06,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:06,239 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1308665447, now seen corresponding path program 29 times [2022-02-10 03:19:06,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:06,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336734192] [2022-02-10 03:19:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:06,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:06,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336734192] [2022-02-10 03:19:06,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336734192] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:06,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638004915] [2022-02-10 03:19:06,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:19:06,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:06,475 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:06,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 03:19:06,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:19:06,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:06,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:19:06,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:06,705 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 101 treesize of output 85 [2022-02-10 03:19:07,565 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 152 treesize of output 134 [2022-02-10 03:19:07,568 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 134 treesize of output 116 [2022-02-10 03:19:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:07,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:08,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:08,531 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 115 treesize of output 105 [2022-02-10 03:19:09,042 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:19:09,042 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 117 treesize of output 100 [2022-02-10 03:19:09,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2022-02-10 03:19:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:09,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638004915] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:09,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:09,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:19:09,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428532464] [2022-02-10 03:19:09,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:09,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:19:09,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:19:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:19:09,108 INFO L87 Difference]: Start difference. First operand 164 states and 376 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:19:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:10,528 INFO L93 Difference]: Finished difference Result 269 states and 576 transitions. [2022-02-10 03:19:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:19:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:19:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:10,529 INFO L225 Difference]: With dead ends: 269 [2022-02-10 03:19:10,529 INFO L226 Difference]: Without dead ends: 263 [2022-02-10 03:19:10,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:19:10,529 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 90 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:10,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 153 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:19:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-02-10 03:19:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2022-02-10 03:19:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.3132530120481927) internal successors, (384), 166 states have internal predecessors, (384), 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 03:19:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 384 transitions. [2022-02-10 03:19:10,532 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 384 transitions. Word has length 20 [2022-02-10 03:19:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:10,532 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 384 transitions. [2022-02-10 03:19:10,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:19:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 384 transitions. [2022-02-10 03:19:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:10,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:10,533 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] [2022-02-10 03:19:10,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:10,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-10 03:19:10,747 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1312342267, now seen corresponding path program 30 times [2022-02-10 03:19:10,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:10,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564027101] [2022-02-10 03:19:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:10,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:11,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:11,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564027101] [2022-02-10 03:19:11,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564027101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:11,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087235203] [2022-02-10 03:19:11,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:19:11,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:11,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:11,010 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:11,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 03:19:11,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:19:11,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:11,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:11,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:11,678 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:19:12,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:12,716 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 124 [2022-02-10 03:19:12,720 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 124 treesize of output 104 [2022-02-10 03:19:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:13,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:14,174 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:14,175 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 122 treesize of output 112 [2022-02-10 03:19:15,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:15,312 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 118 treesize of output 110 [2022-02-10 03:19:15,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:15,320 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 102 treesize of output 94 [2022-02-10 03:19:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:15,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087235203] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:15,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:15,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:15,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791607134] [2022-02-10 03:19:15,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:15,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:15,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:15,478 INFO L87 Difference]: Start difference. First operand 167 states and 384 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:16,554 INFO L93 Difference]: Finished difference Result 258 states and 594 transitions. [2022-02-10 03:19:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:19:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:16,555 INFO L225 Difference]: With dead ends: 258 [2022-02-10 03:19:16,555 INFO L226 Difference]: Without dead ends: 234 [2022-02-10 03:19:16,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:19:16,557 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:16,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 255 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 543 Invalid, 0 Unknown, 176 Unchecked, 0.3s Time] [2022-02-10 03:19:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-10 03:19:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 168. [2022-02-10 03:19:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.3293413173652695) internal successors, (389), 167 states have internal predecessors, (389), 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 03:19:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 389 transitions. [2022-02-10 03:19:16,560 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 389 transitions. Word has length 20 [2022-02-10 03:19:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 389 transitions. [2022-02-10 03:19:16,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 389 transitions. [2022-02-10 03:19:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:16,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:16,561 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] [2022-02-10 03:19:16,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-02-10 03:19:16,763 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -672455163, now seen corresponding path program 31 times [2022-02-10 03:19:16,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:16,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715282705] [2022-02-10 03:19:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:16,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:17,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:17,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715282705] [2022-02-10 03:19:17,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715282705] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:17,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900334145] [2022-02-10 03:19:17,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:19:17,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:17,089 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 03:19:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:17,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:19:17,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:17,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:17,722 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:19:20,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:20,870 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 142 [2022-02-10 03:19:20,873 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 142 treesize of output 122 [2022-02-10 03:19:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:21,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:21,848 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 90 treesize of output 84 [2022-02-10 03:19:22,243 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:22,243 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 113 treesize of output 105 [2022-02-10 03:19:22,249 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:22,250 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 97 treesize of output 89 [2022-02-10 03:19:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:22,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900334145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:22,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:22,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:22,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736916401] [2022-02-10 03:19:22,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:22,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:22,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:22,401 INFO L87 Difference]: Start difference. First operand 168 states and 389 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:23,030 INFO L93 Difference]: Finished difference Result 236 states and 551 transitions. [2022-02-10 03:19:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:19:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:23,030 INFO L225 Difference]: With dead ends: 236 [2022-02-10 03:19:23,030 INFO L226 Difference]: Without dead ends: 221 [2022-02-10 03:19:23,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:19:23,031 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:23,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 196 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 229 Unchecked, 0.2s Time] [2022-02-10 03:19:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-02-10 03:19:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2022-02-10 03:19:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.3195266272189348) internal successors, (392), 169 states have internal predecessors, (392), 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 03:19:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 392 transitions. [2022-02-10 03:19:23,033 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 392 transitions. Word has length 20 [2022-02-10 03:19:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:23,033 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 392 transitions. [2022-02-10 03:19:23,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 392 transitions. [2022-02-10 03:19:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:23,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:23,034 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] [2022-02-10 03:19:23,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 03:19:23,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-02-10 03:19:23,239 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -137225361, now seen corresponding path program 32 times [2022-02-10 03:19:23,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:23,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694054998] [2022-02-10 03:19:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:23,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:23,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:23,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694054998] [2022-02-10 03:19:23,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694054998] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:23,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898957385] [2022-02-10 03:19:23,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:19:23,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:23,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:23,543 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 03:19:23,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:19:23,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:23,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:23,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:24,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:24,028 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:19:25,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:25,304 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 139 [2022-02-10 03:19:25,307 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 139 treesize of output 121 [2022-02-10 03:19:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:26,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:27,174 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:27,174 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 107 treesize of output 99 [2022-02-10 03:19:28,580 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:28,580 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 135 treesize of output 125 [2022-02-10 03:19:28,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:28,589 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 117 treesize of output 107 [2022-02-10 03:19:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:28,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898957385] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:28,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:28,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:28,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586230025] [2022-02-10 03:19:28,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:28,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:28,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:28,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:28,818 INFO L87 Difference]: Start difference. First operand 170 states and 392 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:30,878 INFO L93 Difference]: Finished difference Result 259 states and 546 transitions. [2022-02-10 03:19:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:19:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:30,879 INFO L225 Difference]: With dead ends: 259 [2022-02-10 03:19:30,880 INFO L226 Difference]: Without dead ends: 220 [2022-02-10 03:19:30,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=199, Invalid=1441, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:19:30,880 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 77 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:30,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 252 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 584 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2022-02-10 03:19:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-02-10 03:19:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 169. [2022-02-10 03:19:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3214285714285716) internal successors, (390), 168 states have internal predecessors, (390), 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 03:19:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 390 transitions. [2022-02-10 03:19:30,883 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 390 transitions. Word has length 20 [2022-02-10 03:19:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:30,883 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 390 transitions. [2022-02-10 03:19:30,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 390 transitions. [2022-02-10 03:19:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:30,884 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:30,884 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] [2022-02-10 03:19:30,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:31,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-02-10 03:19:31,095 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1942389231, now seen corresponding path program 33 times [2022-02-10 03:19:31,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:31,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774033776] [2022-02-10 03:19:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:31,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:31,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:31,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774033776] [2022-02-10 03:19:31,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774033776] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:31,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837180238] [2022-02-10 03:19:31,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:19:31,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:31,393 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:31,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 03:19:31,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:19:31,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:31,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:31,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:32,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:32,053 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:19:32,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:32,796 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 145 [2022-02-10 03:19:32,799 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 145 treesize of output 123 [2022-02-10 03:19:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:34,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:35,277 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:35,277 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 122 treesize of output 112 [2022-02-10 03:19:36,513 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:36,514 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 124 treesize of output 114 [2022-02-10 03:19:36,523 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:36,524 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 106 treesize of output 96 [2022-02-10 03:19:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:36,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837180238] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:36,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:36,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:36,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172849783] [2022-02-10 03:19:36,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:36,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:36,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:36,759 INFO L87 Difference]: Start difference. First operand 169 states and 390 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:37,704 INFO L93 Difference]: Finished difference Result 236 states and 535 transitions. [2022-02-10 03:19:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:19:37,705 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:37,705 INFO L225 Difference]: With dead ends: 236 [2022-02-10 03:19:37,705 INFO L226 Difference]: Without dead ends: 230 [2022-02-10 03:19:37,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:19:37,706 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:37,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 178 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 548 Invalid, 0 Unknown, 207 Unchecked, 0.3s Time] [2022-02-10 03:19:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-02-10 03:19:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 170. [2022-02-10 03:19:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.3431952662721893) internal successors, (396), 169 states have internal predecessors, (396), 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 03:19:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 396 transitions. [2022-02-10 03:19:37,708 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 396 transitions. Word has length 20 [2022-02-10 03:19:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:37,709 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 396 transitions. [2022-02-10 03:19:37,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 396 transitions. [2022-02-10 03:19:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:37,709 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:37,709 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] [2022-02-10 03:19:37,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:37,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:37,910 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1580407121, now seen corresponding path program 34 times [2022-02-10 03:19:37,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:37,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875435824] [2022-02-10 03:19:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:37,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:38,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:38,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875435824] [2022-02-10 03:19:38,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875435824] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:38,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139380125] [2022-02-10 03:19:38,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:19:38,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:38,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:38,378 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:38,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 03:19:38,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:19:38,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:38,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:38,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:38,991 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:19:39,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:39,441 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 133 [2022-02-10 03:19:39,445 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 133 treesize of output 113 [2022-02-10 03:19:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:40,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:40,955 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:40,956 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 122 treesize of output 112 [2022-02-10 03:19:41,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:41,934 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 123 treesize of output 113 [2022-02-10 03:19:41,942 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:41,942 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 105 treesize of output 95 [2022-02-10 03:19:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:42,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139380125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:42,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:42,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:42,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661595208] [2022-02-10 03:19:42,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:42,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:42,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:42,074 INFO L87 Difference]: Start difference. First operand 170 states and 396 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:43,324 INFO L93 Difference]: Finished difference Result 232 states and 539 transitions. [2022-02-10 03:19:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:19:43,324 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:43,325 INFO L225 Difference]: With dead ends: 232 [2022-02-10 03:19:43,325 INFO L226 Difference]: Without dead ends: 218 [2022-02-10 03:19:43,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:19:43,325 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:43,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 197 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 576 Invalid, 0 Unknown, 44 Unchecked, 0.3s Time] [2022-02-10 03:19:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-02-10 03:19:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 170. [2022-02-10 03:19:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.3431952662721893) internal successors, (396), 169 states have internal predecessors, (396), 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 03:19:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 396 transitions. [2022-02-10 03:19:43,328 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 396 transitions. Word has length 20 [2022-02-10 03:19:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:43,328 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 396 transitions. [2022-02-10 03:19:43,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 396 transitions. [2022-02-10 03:19:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:43,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:43,328 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] [2022-02-10 03:19:43,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-10 03:19:43,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:43,529 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 215914129, now seen corresponding path program 35 times [2022-02-10 03:19:43,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:43,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298917820] [2022-02-10 03:19:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:43,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:43,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:43,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298917820] [2022-02-10 03:19:43,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298917820] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:43,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042228683] [2022-02-10 03:19:43,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:19:43,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:43,819 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:43,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 03:19:43,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:19:43,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:43,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:19:43,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:44,093 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 109 treesize of output 91 [2022-02-10 03:19:44,363 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 175 treesize of output 153 [2022-02-10 03:19:44,365 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 153 treesize of output 131 [2022-02-10 03:19:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:45,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:46,543 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:46,544 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 152 treesize of output 140 [2022-02-10 03:19:47,028 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:19:47,029 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 106 treesize of output 91 [2022-02-10 03:19:47,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-02-10 03:19:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:47,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042228683] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:47,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:47,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:19:47,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560137554] [2022-02-10 03:19:47,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:47,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:19:47,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:19:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:19:47,066 INFO L87 Difference]: Start difference. First operand 170 states and 396 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:19:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:48,652 INFO L93 Difference]: Finished difference Result 318 states and 668 transitions. [2022-02-10 03:19:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:19:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:19:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:48,653 INFO L225 Difference]: With dead ends: 318 [2022-02-10 03:19:48,653 INFO L226 Difference]: Without dead ends: 312 [2022-02-10 03:19:48,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:19:48,653 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 178 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:48,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 210 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:19:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-02-10 03:19:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 173. [2022-02-10 03:19:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.36046511627907) internal successors, (406), 172 states have internal predecessors, (406), 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 03:19:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 406 transitions. [2022-02-10 03:19:48,656 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 406 transitions. Word has length 20 [2022-02-10 03:19:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:48,656 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 406 transitions. [2022-02-10 03:19:48,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:19:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 406 transitions. [2022-02-10 03:19:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:48,656 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:48,656 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] [2022-02-10 03:19:48,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 03:19:48,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:48,857 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1649512845, now seen corresponding path program 36 times [2022-02-10 03:19:48,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:48,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266745450] [2022-02-10 03:19:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:48,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:49,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:49,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266745450] [2022-02-10 03:19:49,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266745450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:49,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349778991] [2022-02-10 03:19:49,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:19:49,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:49,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:49,138 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:49,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 03:19:49,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:19:49,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:19:49,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:49,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:49,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:49,808 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-02-10 03:19:50,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:50,565 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2022-02-10 03:19:50,569 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 127 treesize of output 107 [2022-02-10 03:19:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:53,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:19:53,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:53,797 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 122 treesize of output 112 [2022-02-10 03:19:55,296 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:55,296 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 130 treesize of output 122 [2022-02-10 03:19:55,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:19:55,307 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 114 treesize of output 106 [2022-02-10 03:19:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:55,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349778991] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:19:55,604 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:19:55,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:19:55,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962731498] [2022-02-10 03:19:55,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:19:55,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:19:55,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:19:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:19:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:19:55,605 INFO L87 Difference]: Start difference. First operand 173 states and 406 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:19:57,821 INFO L93 Difference]: Finished difference Result 325 states and 698 transitions. [2022-02-10 03:19:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:19:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:19:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:19:57,822 INFO L225 Difference]: With dead ends: 325 [2022-02-10 03:19:57,822 INFO L226 Difference]: Without dead ends: 301 [2022-02-10 03:19:57,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 03:19:57,823 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 162 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:19:57,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 230 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 724 Invalid, 0 Unknown, 208 Unchecked, 0.4s Time] [2022-02-10 03:19:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-10 03:19:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 176. [2022-02-10 03:19:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.4114285714285715) internal successors, (422), 175 states have internal predecessors, (422), 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 03:19:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 422 transitions. [2022-02-10 03:19:57,826 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 422 transitions. Word has length 20 [2022-02-10 03:19:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:19:57,826 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 422 transitions. [2022-02-10 03:19:57,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:19:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 422 transitions. [2022-02-10 03:19:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:19:57,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:19:57,827 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] [2022-02-10 03:19:57,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 03:19:58,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:58,048 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:19:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:19:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143791, now seen corresponding path program 37 times [2022-02-10 03:19:58,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:19:58,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093703650] [2022-02-10 03:19:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:19:58,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:19:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:19:58,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:19:58,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093703650] [2022-02-10 03:19:58,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093703650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:19:58,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522034576] [2022-02-10 03:19:58,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:19:58,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:19:58,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:19:58,324 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:19:58,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 03:19:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:19:58,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:19:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:19:58,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:58,796 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:19:59,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:19:59,447 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2022-02-10 03:19:59,450 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 146 treesize of output 126 [2022-02-10 03:20:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:00,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:01,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:01,240 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 122 treesize of output 112 [2022-02-10 03:20:02,127 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:02,127 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 125 treesize of output 115 [2022-02-10 03:20:02,134 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:02,135 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 107 treesize of output 97 [2022-02-10 03:20:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:02,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522034576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:02,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:02,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:02,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449136894] [2022-02-10 03:20:02,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:02,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:02,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:02,357 INFO L87 Difference]: Start difference. First operand 176 states and 422 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:03,700 INFO L93 Difference]: Finished difference Result 254 states and 583 transitions. [2022-02-10 03:20:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:20:03,701 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:03,701 INFO L225 Difference]: With dead ends: 254 [2022-02-10 03:20:03,701 INFO L226 Difference]: Without dead ends: 236 [2022-02-10 03:20:03,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:20:03,702 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:03,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 194 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 620 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-02-10 03:20:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-02-10 03:20:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 179. [2022-02-10 03:20:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.4269662921348316) internal successors, (432), 178 states have internal predecessors, (432), 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 03:20:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 432 transitions. [2022-02-10 03:20:03,704 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 432 transitions. Word has length 20 [2022-02-10 03:20:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:03,704 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 432 transitions. [2022-02-10 03:20:03,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 432 transitions. [2022-02-10 03:20:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:03,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:03,705 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] [2022-02-10 03:20:03,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 03:20:03,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:03,906 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -662635161, now seen corresponding path program 38 times [2022-02-10 03:20:03,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:03,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915464636] [2022-02-10 03:20:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:03,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:04,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:04,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915464636] [2022-02-10 03:20:04,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915464636] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:04,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290840221] [2022-02-10 03:20:04,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:20:04,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:04,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:04,160 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:04,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 03:20:04,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:20:04,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:04,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:20:04,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:04,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:04,741 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:20:05,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:05,954 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 143 [2022-02-10 03:20:05,957 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 143 treesize of output 119 [2022-02-10 03:20:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:07,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:08,024 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:08,025 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 90 treesize of output 84 [2022-02-10 03:20:08,422 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:08,422 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 102 treesize of output 94 [2022-02-10 03:20:08,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:08,431 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 86 treesize of output 78 [2022-02-10 03:20:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:08,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290840221] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:08,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:08,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:08,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105023028] [2022-02-10 03:20:08,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:08,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:08,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:08,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:08,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:08,554 INFO L87 Difference]: Start difference. First operand 179 states and 432 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:09,988 INFO L93 Difference]: Finished difference Result 271 states and 619 transitions. [2022-02-10 03:20:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:20:09,988 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:09,989 INFO L225 Difference]: With dead ends: 271 [2022-02-10 03:20:09,989 INFO L226 Difference]: Without dead ends: 259 [2022-02-10 03:20:09,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:20:09,989 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 90 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:09,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 200 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 586 Invalid, 0 Unknown, 235 Unchecked, 0.3s Time] [2022-02-10 03:20:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-10 03:20:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 181. [2022-02-10 03:20:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.4611111111111112) internal successors, (443), 180 states have internal predecessors, (443), 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 03:20:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 443 transitions. [2022-02-10 03:20:09,992 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 443 transitions. Word has length 20 [2022-02-10 03:20:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:09,992 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 443 transitions. [2022-02-10 03:20:09,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 443 transitions. [2022-02-10 03:20:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:09,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:09,993 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] [2022-02-10 03:20:10,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 03:20:10,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-10 03:20:10,193 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1024617271, now seen corresponding path program 39 times [2022-02-10 03:20:10,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:10,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318013345] [2022-02-10 03:20:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:10,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:10,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:10,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318013345] [2022-02-10 03:20:10,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318013345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:10,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380023874] [2022-02-10 03:20:10,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:20:10,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:10,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:10,513 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:10,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 03:20:10,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:20:10,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:10,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:20:10,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:11,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:11,002 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:20:11,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:11,955 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 166 [2022-02-10 03:20:11,957 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 166 treesize of output 142 [2022-02-10 03:20:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:13,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:14,423 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:14,424 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 155 treesize of output 145 [2022-02-10 03:20:14,926 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:14,926 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 106 treesize of output 98 [2022-02-10 03:20:14,932 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:14,932 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 90 treesize of output 82 [2022-02-10 03:20:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:15,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380023874] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:15,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:15,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:15,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240291454] [2022-02-10 03:20:15,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:15,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:15,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:15,040 INFO L87 Difference]: Start difference. First operand 181 states and 443 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:16,024 INFO L93 Difference]: Finished difference Result 244 states and 587 transitions. [2022-02-10 03:20:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:20:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:16,025 INFO L225 Difference]: With dead ends: 244 [2022-02-10 03:20:16,025 INFO L226 Difference]: Without dead ends: 229 [2022-02-10 03:20:16,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:20:16,025 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:16,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 193 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 496 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-02-10 03:20:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-10 03:20:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 182. [2022-02-10 03:20:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.4806629834254146) internal successors, (449), 181 states have internal predecessors, (449), 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 03:20:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 449 transitions. [2022-02-10 03:20:16,027 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 449 transitions. Word has length 20 [2022-02-10 03:20:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:16,028 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 449 transitions. [2022-02-10 03:20:16,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 449 transitions. [2022-02-10 03:20:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:16,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:16,028 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] [2022-02-10 03:20:16,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 03:20:16,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-10 03:20:16,229 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1905857033, now seen corresponding path program 40 times [2022-02-10 03:20:16,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:16,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101119141] [2022-02-10 03:20:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:16,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:16,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:16,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101119141] [2022-02-10 03:20:16,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101119141] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:16,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799591690] [2022-02-10 03:20:16,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:20:16,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:16,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:16,503 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:16,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 03:20:16,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:20:16,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:16,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:20:16,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:17,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:17,014 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-02-10 03:20:17,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:17,632 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-02-10 03:20:17,635 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 154 treesize of output 132 [2022-02-10 03:20:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:18,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:19,769 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:19,769 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 90 treesize of output 84 [2022-02-10 03:20:20,231 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:20,232 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 118 treesize of output 108 [2022-02-10 03:20:20,238 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:20,238 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 100 treesize of output 90 [2022-02-10 03:20:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:20,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799591690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:20,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:20,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:20,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245323350] [2022-02-10 03:20:20,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:20,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:20,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:20,397 INFO L87 Difference]: Start difference. First operand 182 states and 449 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:21,613 INFO L93 Difference]: Finished difference Result 309 states and 675 transitions. [2022-02-10 03:20:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:20:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:21,614 INFO L225 Difference]: With dead ends: 309 [2022-02-10 03:20:21,614 INFO L226 Difference]: Without dead ends: 277 [2022-02-10 03:20:21,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=187, Invalid=1373, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:20:21,614 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:21,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 252 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 632 Invalid, 0 Unknown, 217 Unchecked, 0.3s Time] [2022-02-10 03:20:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-02-10 03:20:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 183. [2022-02-10 03:20:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.4725274725274726) internal successors, (450), 182 states have internal predecessors, (450), 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 03:20:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 450 transitions. [2022-02-10 03:20:21,617 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 450 transitions. Word has length 20 [2022-02-10 03:20:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:21,617 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 450 transitions. [2022-02-10 03:20:21,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 450 transitions. [2022-02-10 03:20:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:21,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:21,617 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] [2022-02-10 03:20:21,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 03:20:21,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-10 03:20:21,818 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash 250332647, now seen corresponding path program 41 times [2022-02-10 03:20:21,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:21,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952812484] [2022-02-10 03:20:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:21,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:22,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:22,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952812484] [2022-02-10 03:20:22,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952812484] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:22,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459251705] [2022-02-10 03:20:22,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:20:22,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:22,119 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:22,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 03:20:22,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:20:22,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:22,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:20:22,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:22,365 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 121 treesize of output 103 [2022-02-10 03:20:23,409 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 185 treesize of output 159 [2022-02-10 03:20:23,412 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 159 treesize of output 133 [2022-02-10 03:20:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:24,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:24,891 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:24,891 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 90 treesize of output 84 [2022-02-10 03:20:25,253 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-10 03:20:25,253 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 90 treesize of output 77 [2022-02-10 03:20:25,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-02-10 03:20:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:25,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459251705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:25,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:25,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-02-10 03:20:25,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425499601] [2022-02-10 03:20:25,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:25,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 03:20:25,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 03:20:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-02-10 03:20:25,316 INFO L87 Difference]: Start difference. First operand 183 states and 450 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:20:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:29,168 INFO L93 Difference]: Finished difference Result 329 states and 692 transitions. [2022-02-10 03:20:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:20:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 20 [2022-02-10 03:20:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:29,168 INFO L225 Difference]: With dead ends: 329 [2022-02-10 03:20:29,168 INFO L226 Difference]: Without dead ends: 297 [2022-02-10 03:20:29,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=297, Invalid=1683, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:20:29,169 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 177 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:29,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 266 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:20:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-10 03:20:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 192. [2022-02-10 03:20:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.4554973821989527) internal successors, (469), 191 states have internal predecessors, (469), 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 03:20:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 469 transitions. [2022-02-10 03:20:29,172 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 469 transitions. Word has length 20 [2022-02-10 03:20:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:29,172 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 469 transitions. [2022-02-10 03:20:29,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 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 03:20:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 469 transitions. [2022-02-10 03:20:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:29,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:29,172 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] [2022-02-10 03:20:29,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 03:20:29,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-10 03:20:29,373 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 234255847, now seen corresponding path program 42 times [2022-02-10 03:20:29,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:29,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324796084] [2022-02-10 03:20:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:29,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:29,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:29,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324796084] [2022-02-10 03:20:29,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324796084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:29,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789033515] [2022-02-10 03:20:29,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:20:29,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:29,727 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:29,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 03:20:29,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:20:29,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:29,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:20:29,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:30,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:30,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:20:32,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:32,342 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 143 [2022-02-10 03:20:32,345 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 143 treesize of output 121 [2022-02-10 03:20:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:33,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:33,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:33,766 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 78 treesize of output 72 [2022-02-10 03:20:34,100 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:34,100 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 109 treesize of output 101 [2022-02-10 03:20:34,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:34,107 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 93 treesize of output 85 [2022-02-10 03:20:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:34,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789033515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:34,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:34,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:34,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089946165] [2022-02-10 03:20:34,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:34,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:34,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:34,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:34,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:34,229 INFO L87 Difference]: Start difference. First operand 192 states and 469 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:35,396 INFO L93 Difference]: Finished difference Result 255 states and 608 transitions. [2022-02-10 03:20:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:20:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:35,397 INFO L225 Difference]: With dead ends: 255 [2022-02-10 03:20:35,397 INFO L226 Difference]: Without dead ends: 243 [2022-02-10 03:20:35,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:20:35,398 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:35,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 177 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 669 Invalid, 0 Unknown, 136 Unchecked, 0.3s Time] [2022-02-10 03:20:35,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-10 03:20:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 194. [2022-02-10 03:20:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.4507772020725387) internal successors, (473), 193 states have internal predecessors, (473), 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 03:20:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 473 transitions. [2022-02-10 03:20:35,400 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 473 transitions. Word has length 20 [2022-02-10 03:20:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:35,400 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 473 transitions. [2022-02-10 03:20:35,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 473 transitions. [2022-02-10 03:20:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:35,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:35,401 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] [2022-02-10 03:20:35,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 03:20:35,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:35,601 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1041282295, now seen corresponding path program 43 times [2022-02-10 03:20:35,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:35,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962510399] [2022-02-10 03:20:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:35,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:35,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:35,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962510399] [2022-02-10 03:20:35,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962510399] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:35,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087514146] [2022-02-10 03:20:35,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:20:35,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:35,898 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:35,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 03:20:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:35,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:20:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:36,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:36,348 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-02-10 03:20:37,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:37,645 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 147 [2022-02-10 03:20:37,649 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 147 treesize of output 125 [2022-02-10 03:20:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:38,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:39,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:39,311 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 139 treesize of output 127 [2022-02-10 03:20:39,991 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:39,992 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 118 treesize of output 108 [2022-02-10 03:20:39,999 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:39,999 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 100 treesize of output 90 [2022-02-10 03:20:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:40,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087514146] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:40,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:40,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:20:40,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765253441] [2022-02-10 03:20:40,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:40,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:20:40,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:20:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:20:40,153 INFO L87 Difference]: Start difference. First operand 194 states and 473 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:41,286 INFO L93 Difference]: Finished difference Result 249 states and 594 transitions. [2022-02-10 03:20:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 03:20:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:20:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:41,286 INFO L225 Difference]: With dead ends: 249 [2022-02-10 03:20:41,286 INFO L226 Difference]: Without dead ends: 235 [2022-02-10 03:20:41,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:20:41,287 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:41,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 162 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 615 Invalid, 0 Unknown, 192 Unchecked, 0.3s Time] [2022-02-10 03:20:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-02-10 03:20:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2022-02-10 03:20:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.4583333333333335) internal successors, (472), 192 states have internal predecessors, (472), 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 03:20:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 472 transitions. [2022-02-10 03:20:41,289 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 472 transitions. Word has length 20 [2022-02-10 03:20:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:41,289 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 472 transitions. [2022-02-10 03:20:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:20:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 472 transitions. [2022-02-10 03:20:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:41,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:41,290 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] [2022-02-10 03:20:41,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 03:20:41,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:41,490 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1012992363, now seen corresponding path program 44 times [2022-02-10 03:20:41,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:41,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800734417] [2022-02-10 03:20:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:41,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:41,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:41,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800734417] [2022-02-10 03:20:41,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800734417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:41,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398859642] [2022-02-10 03:20:41,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:20:41,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:41,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:41,744 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:41,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 03:20:41,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:20:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:20:41,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:42,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:42,052 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:20:46,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:46,513 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2022-02-10 03:20:46,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:46,517 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 126 [2022-02-10 03:20:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:47,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:47,961 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:47,962 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 126 treesize of output 118 [2022-02-10 03:20:48,558 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:48,558 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 137 treesize of output 127 [2022-02-10 03:20:48,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:48,565 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 119 treesize of output 109 [2022-02-10 03:20:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:48,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398859642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:48,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:48,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:20:48,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701314636] [2022-02-10 03:20:48,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:48,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:20:48,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:20:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:20:48,748 INFO L87 Difference]: Start difference. First operand 193 states and 472 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:20:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:49,323 INFO L93 Difference]: Finished difference Result 232 states and 557 transitions. [2022-02-10 03:20:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:20:49,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:20:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:49,324 INFO L225 Difference]: With dead ends: 232 [2022-02-10 03:20:49,324 INFO L226 Difference]: Without dead ends: 227 [2022-02-10 03:20:49,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:20:49,324 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:49,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 115 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-02-10 03:20:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-02-10 03:20:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 199. [2022-02-10 03:20:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.45959595959596) internal successors, (487), 198 states have internal predecessors, (487), 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 03:20:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 487 transitions. [2022-02-10 03:20:49,327 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 487 transitions. Word has length 20 [2022-02-10 03:20:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:49,327 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 487 transitions. [2022-02-10 03:20:49,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:20:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 487 transitions. [2022-02-10 03:20:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:49,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:49,328 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] [2022-02-10 03:20:49,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-10 03:20:49,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-02-10 03:20:49,528 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash -136079799, now seen corresponding path program 45 times [2022-02-10 03:20:49,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:49,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26412195] [2022-02-10 03:20:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:49,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:49,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:49,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26412195] [2022-02-10 03:20:49,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26412195] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:49,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402194836] [2022-02-10 03:20:49,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:20:49,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:49,800 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:49,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 03:20:49,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:20:49,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:49,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:20:49,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:49,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:49,935 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-02-10 03:20:51,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:51,337 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 172 [2022-02-10 03:20:51,339 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 172 treesize of output 148 [2022-02-10 03:20:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:52,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:20:52,754 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:52,754 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 124 treesize of output 116 [2022-02-10 03:20:53,106 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:53,106 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 124 treesize of output 114 [2022-02-10 03:20:53,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:20:53,113 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 106 treesize of output 96 [2022-02-10 03:20:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:53,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402194836] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:20:53,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:20:53,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:20:53,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053570161] [2022-02-10 03:20:53,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:20:53,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:20:53,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:20:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:20:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:20:53,300 INFO L87 Difference]: Start difference. First operand 199 states and 487 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:20:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:20:54,373 INFO L93 Difference]: Finished difference Result 351 states and 766 transitions. [2022-02-10 03:20:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:20:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:20:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:20:54,374 INFO L225 Difference]: With dead ends: 351 [2022-02-10 03:20:54,374 INFO L226 Difference]: Without dead ends: 332 [2022-02-10 03:20:54,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:20:54,374 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:20:54,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 285 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 720 Invalid, 0 Unknown, 376 Unchecked, 0.3s Time] [2022-02-10 03:20:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-02-10 03:20:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 207. [2022-02-10 03:20:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.4611650485436893) internal successors, (507), 206 states have internal predecessors, (507), 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 03:20:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 507 transitions. [2022-02-10 03:20:54,377 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 507 transitions. Word has length 20 [2022-02-10 03:20:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:20:54,377 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 507 transitions. [2022-02-10 03:20:54,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:20:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 507 transitions. [2022-02-10 03:20:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:20:54,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:20:54,378 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] [2022-02-10 03:20:54,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 03:20:54,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:54,578 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:20:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:20:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1866833609, now seen corresponding path program 46 times [2022-02-10 03:20:54,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:20:54,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804633558] [2022-02-10 03:20:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:20:54,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:20:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:20:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:20:54,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:20:54,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804633558] [2022-02-10 03:20:54,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804633558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:20:54,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646684603] [2022-02-10 03:20:54,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:20:54,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:20:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:20:54,822 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:20:54,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 03:20:54,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:20:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:20:54,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:20:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:20:55,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:20:55,142 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 119 [2022-02-10 03:21:15,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:15,922 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 144 [2022-02-10 03:21:15,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:15,934 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 124 [2022-02-10 03:21:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:17,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:17,692 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:17,692 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 90 treesize of output 84 [2022-02-10 03:21:18,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:18,107 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 117 treesize of output 107 [2022-02-10 03:21:18,117 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:18,118 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 99 treesize of output 89 [2022-02-10 03:21:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:18,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646684603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:18,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:18,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:21:18,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716080649] [2022-02-10 03:21:18,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:18,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:21:18,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:21:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:21:18,569 INFO L87 Difference]: Start difference. First operand 207 states and 507 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:19,186 INFO L93 Difference]: Finished difference Result 268 states and 621 transitions. [2022-02-10 03:21:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 03:21:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:21:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:19,187 INFO L225 Difference]: With dead ends: 268 [2022-02-10 03:21:19,187 INFO L226 Difference]: Without dead ends: 252 [2022-02-10 03:21:19,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:21:19,187 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:19,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 165 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 448 Invalid, 0 Unknown, 212 Unchecked, 0.2s Time] [2022-02-10 03:21:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-02-10 03:21:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 208. [2022-02-10 03:21:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.4589371980676327) internal successors, (509), 207 states have internal predecessors, (509), 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 03:21:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 509 transitions. [2022-02-10 03:21:19,190 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 509 transitions. Word has length 20 [2022-02-10 03:21:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:19,190 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 509 transitions. [2022-02-10 03:21:19,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 509 transitions. [2022-02-10 03:21:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:19,190 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:19,190 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] [2022-02-10 03:21:19,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-10 03:21:19,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:19,391 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1224349431, now seen corresponding path program 47 times [2022-02-10 03:21:19,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:19,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653837153] [2022-02-10 03:21:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:19,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:19,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:19,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653837153] [2022-02-10 03:21:19,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653837153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:19,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392617296] [2022-02-10 03:21:19,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:21:19,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:19,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:19,617 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:19,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 03:21:19,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:21:19,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:21:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:21:19,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:19,766 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 121 treesize of output 103 [2022-02-10 03:21:20,385 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 194 treesize of output 168 [2022-02-10 03:21:20,387 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 168 treesize of output 142 [2022-02-10 03:21:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:21,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:21,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:21,796 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 154 treesize of output 138 [2022-02-10 03:21:22,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:22,066 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 129 treesize of output 115 [2022-02-10 03:21:22,072 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:22,072 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 107 treesize of output 93 [2022-02-10 03:21:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:22,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392617296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:22,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:22,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:21:22,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575335637] [2022-02-10 03:21:22,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:22,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:21:22,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:21:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:21:22,190 INFO L87 Difference]: Start difference. First operand 208 states and 509 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:21:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:26,227 INFO L93 Difference]: Finished difference Result 440 states and 911 transitions. [2022-02-10 03:21:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:21:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:21:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:26,228 INFO L225 Difference]: With dead ends: 440 [2022-02-10 03:21:26,228 INFO L226 Difference]: Without dead ends: 422 [2022-02-10 03:21:26,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=270, Invalid=1710, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:21:26,229 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 288 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:26,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 213 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:21:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-02-10 03:21:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 209. [2022-02-10 03:21:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.4711538461538463) internal successors, (514), 208 states have internal predecessors, (514), 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 03:21:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 514 transitions. [2022-02-10 03:21:26,232 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 514 transitions. Word has length 20 [2022-02-10 03:21:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:26,232 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 514 transitions. [2022-02-10 03:21:26,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:21:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 514 transitions. [2022-02-10 03:21:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:26,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:26,232 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] [2022-02-10 03:21:26,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-10 03:21:26,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:26,433 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1795079723, now seen corresponding path program 48 times [2022-02-10 03:21:26,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:26,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630428070] [2022-02-10 03:21:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:26,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:26,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:26,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630428070] [2022-02-10 03:21:26,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630428070] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:26,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536157226] [2022-02-10 03:21:26,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:21:26,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:26,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:26,680 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:26,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 03:21:26,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:21:26,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:21:26,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:21:26,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:26,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:26,937 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:21:32,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:32,030 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2022-02-10 03:21:32,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:32,035 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-02-10 03:21:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:32,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:33,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:33,838 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 143 treesize of output 133 [2022-02-10 03:21:34,394 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:34,394 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 142 treesize of output 130 [2022-02-10 03:21:34,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:34,402 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 122 treesize of output 110 [2022-02-10 03:21:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:34,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536157226] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:34,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:34,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:21:34,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733516183] [2022-02-10 03:21:34,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:34,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:21:34,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:21:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:21:34,613 INFO L87 Difference]: Start difference. First operand 209 states and 514 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:35,492 INFO L93 Difference]: Finished difference Result 245 states and 602 transitions. [2022-02-10 03:21:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:21:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:21:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:35,493 INFO L225 Difference]: With dead ends: 245 [2022-02-10 03:21:35,493 INFO L226 Difference]: Without dead ends: 240 [2022-02-10 03:21:35,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:21:35,493 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:35,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 417 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-02-10 03:21:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-10 03:21:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 212. [2022-02-10 03:21:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.4644549763033177) internal successors, (520), 211 states have internal predecessors, (520), 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 03:21:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 520 transitions. [2022-02-10 03:21:35,496 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 520 transitions. Word has length 20 [2022-02-10 03:21:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:35,496 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 520 transitions. [2022-02-10 03:21:35,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 520 transitions. [2022-02-10 03:21:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:35,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:35,496 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] [2022-02-10 03:21:35,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 03:21:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-02-10 03:21:35,697 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash 20471399, now seen corresponding path program 49 times [2022-02-10 03:21:35,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:35,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771382492] [2022-02-10 03:21:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:35,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:36,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:36,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771382492] [2022-02-10 03:21:36,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771382492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:36,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137347116] [2022-02-10 03:21:36,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:21:36,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:36,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:36,078 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:36,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 03:21:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:36,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:21:36,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:36,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:36,308 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-02-10 03:21:37,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:37,828 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-02-10 03:21:37,831 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 154 treesize of output 132 [2022-02-10 03:21:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:39,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:40,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:40,050 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 90 treesize of output 84 [2022-02-10 03:21:40,318 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:40,319 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 133 treesize of output 123 [2022-02-10 03:21:40,326 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:40,327 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 115 treesize of output 105 [2022-02-10 03:21:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:40,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137347116] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:40,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:40,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:21:40,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312318468] [2022-02-10 03:21:40,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:40,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:21:40,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:21:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:21:40,654 INFO L87 Difference]: Start difference. First operand 212 states and 520 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:21:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:43,276 INFO L93 Difference]: Finished difference Result 401 states and 872 transitions. [2022-02-10 03:21:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 03:21:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:21:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:43,277 INFO L225 Difference]: With dead ends: 401 [2022-02-10 03:21:43,278 INFO L226 Difference]: Without dead ends: 369 [2022-02-10 03:21:43,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:21:43,278 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 194 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:43,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 280 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 926 Invalid, 0 Unknown, 173 Unchecked, 0.5s Time] [2022-02-10 03:21:43,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-10 03:21:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 217. [2022-02-10 03:21:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.5) internal successors, (540), 216 states have internal predecessors, (540), 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 03:21:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2022-02-10 03:21:43,282 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 20 [2022-02-10 03:21:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:43,282 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2022-02-10 03:21:43,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:21:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2022-02-10 03:21:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:43,283 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:43,283 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] [2022-02-10 03:21:43,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-10 03:21:43,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-02-10 03:21:43,495 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1706003703, now seen corresponding path program 50 times [2022-02-10 03:21:43,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:43,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513254854] [2022-02-10 03:21:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:43,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:43,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:43,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513254854] [2022-02-10 03:21:43,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513254854] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:43,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207937327] [2022-02-10 03:21:43,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:21:43,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:43,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:43,788 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:43,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 03:21:43,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:21:43,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:21:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:21:43,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:43,950 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 141 treesize of output 119 [2022-02-10 03:21:45,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:45,044 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2022-02-10 03:21:45,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:45,048 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 118 [2022-02-10 03:21:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:46,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:47,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:47,605 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 134 treesize of output 124 [2022-02-10 03:21:48,015 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:48,016 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 143 treesize of output 131 [2022-02-10 03:21:48,023 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:48,023 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 123 treesize of output 111 [2022-02-10 03:21:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:48,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207937327] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:48,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:48,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:21:48,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103777154] [2022-02-10 03:21:48,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:48,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:21:48,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:21:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:21:48,416 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:49,363 INFO L93 Difference]: Finished difference Result 297 states and 702 transitions. [2022-02-10 03:21:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:21:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:21:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:49,364 INFO L225 Difference]: With dead ends: 297 [2022-02-10 03:21:49,364 INFO L226 Difference]: Without dead ends: 291 [2022-02-10 03:21:49,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:21:49,367 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 138 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 108 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 364 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-02-10 03:21:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-10 03:21:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 216. [2022-02-10 03:21:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.483720930232558) internal successors, (534), 215 states have internal predecessors, (534), 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 03:21:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2022-02-10 03:21:49,370 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 20 [2022-02-10 03:21:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:49,370 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2022-02-10 03:21:49,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2022-02-10 03:21:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:49,371 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:49,371 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] [2022-02-10 03:21:49,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-10 03:21:49,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-02-10 03:21:49,572 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash 723536619, now seen corresponding path program 51 times [2022-02-10 03:21:49,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:49,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733219993] [2022-02-10 03:21:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:49,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:49,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:49,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733219993] [2022-02-10 03:21:49,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733219993] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:49,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533549600] [2022-02-10 03:21:49,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:21:49,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:49,834 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:49,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 03:21:49,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:21:49,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:21:49,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:21:49,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:49,961 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 121 treesize of output 101 [2022-02-10 03:21:50,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:50,859 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 138 [2022-02-10 03:21:50,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:50,862 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 116 [2022-02-10 03:21:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:52,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:54,215 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:54,215 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 159 treesize of output 149 [2022-02-10 03:21:54,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:54,775 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 160 treesize of output 144 [2022-02-10 03:21:54,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:54,786 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 136 treesize of output 120 [2022-02-10 03:21:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:55,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533549600] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:55,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:55,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:21:55,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721201397] [2022-02-10 03:21:55,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:55,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:21:55,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:21:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:21:55,003 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:21:56,149 INFO L93 Difference]: Finished difference Result 285 states and 671 transitions. [2022-02-10 03:21:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:21:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:21:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:21:56,150 INFO L225 Difference]: With dead ends: 285 [2022-02-10 03:21:56,150 INFO L226 Difference]: Without dead ends: 280 [2022-02-10 03:21:56,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:21:56,151 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 96 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:21:56,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 154 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 573 Invalid, 0 Unknown, 154 Unchecked, 0.3s Time] [2022-02-10 03:21:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-02-10 03:21:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 218. [2022-02-10 03:21:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.4838709677419355) internal successors, (539), 217 states have internal predecessors, (539), 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 03:21:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 539 transitions. [2022-02-10 03:21:56,153 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 539 transitions. Word has length 20 [2022-02-10 03:21:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:21:56,153 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 539 transitions. [2022-02-10 03:21:56,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:21:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 539 transitions. [2022-02-10 03:21:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:21:56,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:21:56,154 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] [2022-02-10 03:21:56,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-10 03:21:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:56,355 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:21:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:21:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1037623529, now seen corresponding path program 52 times [2022-02-10 03:21:56,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:21:56,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392962200] [2022-02-10 03:21:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:21:56,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:21:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:21:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:56,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:21:56,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392962200] [2022-02-10 03:21:56,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392962200] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:21:56,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114333936] [2022-02-10 03:21:56,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:21:56,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:21:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:21:56,760 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:21:56,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 03:21:56,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:21:56,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:21:56,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:21:56,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:21:57,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:57,119 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2022-02-10 03:21:57,515 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 156 treesize of output 136 [2022-02-10 03:21:57,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:21:57,518 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 116 [2022-02-10 03:21:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:58,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:21:58,494 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:58,495 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 130 treesize of output 122 [2022-02-10 03:21:58,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:58,888 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 125 treesize of output 113 [2022-02-10 03:21:58,896 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:21:58,896 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 105 treesize of output 93 [2022-02-10 03:21:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:21:59,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114333936] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:21:59,229 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:21:59,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:21:59,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622217282] [2022-02-10 03:21:59,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:21:59,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:21:59,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:21:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:21:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:21:59,230 INFO L87 Difference]: Start difference. First operand 218 states and 539 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:00,256 INFO L93 Difference]: Finished difference Result 263 states and 632 transitions. [2022-02-10 03:22:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:22:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:22:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:00,257 INFO L225 Difference]: With dead ends: 263 [2022-02-10 03:22:00,257 INFO L226 Difference]: Without dead ends: 257 [2022-02-10 03:22:00,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-02-10 03:22:00,257 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:00,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:22:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-10 03:22:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 223. [2022-02-10 03:22:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.463963963963964) internal successors, (547), 222 states have internal predecessors, (547), 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 03:22:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 547 transitions. [2022-02-10 03:22:00,260 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 547 transitions. Word has length 20 [2022-02-10 03:22:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:00,260 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 547 transitions. [2022-02-10 03:22:00,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 547 transitions. [2022-02-10 03:22:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:00,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:00,261 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] [2022-02-10 03:22:00,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 03:22:00,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-02-10 03:22:00,461 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 32836075, now seen corresponding path program 53 times [2022-02-10 03:22:00,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:00,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600984700] [2022-02-10 03:22:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:00,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:00,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600984700] [2022-02-10 03:22:00,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600984700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:00,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528200925] [2022-02-10 03:22:00,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:22:00,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:00,734 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:00,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 03:22:00,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:22:00,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:00,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:00,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:01,057 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 107 treesize of output 91 [2022-02-10 03:22:01,280 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 171 treesize of output 151 [2022-02-10 03:22:01,283 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 151 treesize of output 131 [2022-02-10 03:22:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:02,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:02,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:02,635 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 122 treesize of output 114 [2022-02-10 03:22:03,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:03,042 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 119 treesize of output 109 [2022-02-10 03:22:03,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:03,049 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 101 treesize of output 91 [2022-02-10 03:22:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:03,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528200925] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:03,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:03,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:22:03,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948782029] [2022-02-10 03:22:03,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:03,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:22:03,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:22:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:22:03,243 INFO L87 Difference]: Start difference. First operand 223 states and 547 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:22:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:05,218 INFO L93 Difference]: Finished difference Result 295 states and 669 transitions. [2022-02-10 03:22:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:22:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:22:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:05,218 INFO L225 Difference]: With dead ends: 295 [2022-02-10 03:22:05,219 INFO L226 Difference]: Without dead ends: 283 [2022-02-10 03:22:05,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:22:05,219 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 138 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:05,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 95 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:22:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-02-10 03:22:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 223. [2022-02-10 03:22:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.463963963963964) internal successors, (547), 222 states have internal predecessors, (547), 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 03:22:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 547 transitions. [2022-02-10 03:22:05,223 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 547 transitions. Word has length 20 [2022-02-10 03:22:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:05,223 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 547 transitions. [2022-02-10 03:22:05,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:22:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 547 transitions. [2022-02-10 03:22:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:05,223 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:05,223 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] [2022-02-10 03:22:05,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-10 03:22:05,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-02-10 03:22:05,424 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1242702067, now seen corresponding path program 54 times [2022-02-10 03:22:05,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:05,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739983347] [2022-02-10 03:22:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:05,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:05,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:05,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739983347] [2022-02-10 03:22:05,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739983347] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:05,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844703310] [2022-02-10 03:22:05,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:22:05,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:05,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:05,640 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:05,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 03:22:05,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:22:05,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:05,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:22:05,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:06,008 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 112 treesize of output 96 [2022-02-10 03:22:06,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:06,365 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 174 [2022-02-10 03:22:06,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:06,367 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 148 [2022-02-10 03:22:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:07,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:07,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:07,732 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 118 treesize of output 110 [2022-02-10 03:22:08,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:08,323 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 124 treesize of output 114 [2022-02-10 03:22:08,331 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:08,331 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 106 treesize of output 96 [2022-02-10 03:22:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:08,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844703310] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:08,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:08,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:22:08,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435993951] [2022-02-10 03:22:08,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:08,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:22:08,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:22:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:22:08,516 INFO L87 Difference]: Start difference. First operand 223 states and 547 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:10,432 INFO L93 Difference]: Finished difference Result 303 states and 707 transitions. [2022-02-10 03:22:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:22:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:22:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:10,433 INFO L225 Difference]: With dead ends: 303 [2022-02-10 03:22:10,433 INFO L226 Difference]: Without dead ends: 293 [2022-02-10 03:22:10,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:22:10,433 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:10,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 141 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:22:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-02-10 03:22:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 229. [2022-02-10 03:22:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.469298245614035) internal successors, (563), 228 states have internal predecessors, (563), 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 03:22:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 563 transitions. [2022-02-10 03:22:10,437 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 563 transitions. Word has length 20 [2022-02-10 03:22:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:10,437 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 563 transitions. [2022-02-10 03:22:10,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 563 transitions. [2022-02-10 03:22:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:10,437 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:10,437 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] [2022-02-10 03:22:10,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-10 03:22:10,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-02-10 03:22:10,638 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1108449431, now seen corresponding path program 55 times [2022-02-10 03:22:10,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:10,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093739064] [2022-02-10 03:22:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:10,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:10,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:10,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093739064] [2022-02-10 03:22:10,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093739064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:10,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458022912] [2022-02-10 03:22:10,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:22:10,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:10,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:10,900 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:10,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 03:22:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:10,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:11,140 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 101 treesize of output 85 [2022-02-10 03:22:12,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:12,162 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 156 [2022-02-10 03:22:12,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:12,165 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 130 [2022-02-10 03:22:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:13,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:14,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:14,333 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 152 treesize of output 142 [2022-02-10 03:22:14,637 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:14,637 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 138 treesize of output 126 [2022-02-10 03:22:14,644 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:14,644 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 118 treesize of output 106 [2022-02-10 03:22:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:14,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458022912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:14,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:14,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:22:14,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684495355] [2022-02-10 03:22:14,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:22:14,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:22:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:22:14,913 INFO L87 Difference]: Start difference. First operand 229 states and 563 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:17,047 INFO L93 Difference]: Finished difference Result 357 states and 799 transitions. [2022-02-10 03:22:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:22:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:22:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:17,048 INFO L225 Difference]: With dead ends: 357 [2022-02-10 03:22:17,048 INFO L226 Difference]: Without dead ends: 325 [2022-02-10 03:22:17,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:22:17,048 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 107 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:17,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 211 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:22:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-10 03:22:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 239. [2022-02-10 03:22:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.4873949579831933) internal successors, (592), 238 states have internal predecessors, (592), 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 03:22:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 592 transitions. [2022-02-10 03:22:17,051 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 592 transitions. Word has length 20 [2022-02-10 03:22:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:17,051 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 592 transitions. [2022-02-10 03:22:17,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 592 transitions. [2022-02-10 03:22:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:17,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:17,052 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] [2022-02-10 03:22:17,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-10 03:22:17,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-02-10 03:22:17,254 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash -972022165, now seen corresponding path program 56 times [2022-02-10 03:22:17,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:17,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601861509] [2022-02-10 03:22:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:17,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:17,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:17,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601861509] [2022-02-10 03:22:17,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601861509] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:17,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909505810] [2022-02-10 03:22:17,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:22:17,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:17,528 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:17,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 03:22:17,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:22:17,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:17,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:17,770 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:22:18,109 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 178 treesize of output 156 [2022-02-10 03:22:18,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:18,114 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 134 [2022-02-10 03:22:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:19,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:20,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:20,401 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 152 treesize of output 142 [2022-02-10 03:22:20,773 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:20,773 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 138 treesize of output 126 [2022-02-10 03:22:20,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:20,782 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 118 treesize of output 106 [2022-02-10 03:22:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:21,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909505810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:21,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:21,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:22:21,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622459970] [2022-02-10 03:22:21,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:21,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:22:21,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:22:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:22:21,140 INFO L87 Difference]: Start difference. First operand 239 states and 592 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:23,619 INFO L93 Difference]: Finished difference Result 372 states and 818 transitions. [2022-02-10 03:22:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:22:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:22:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:23,620 INFO L225 Difference]: With dead ends: 372 [2022-02-10 03:22:23,620 INFO L226 Difference]: Without dead ends: 360 [2022-02-10 03:22:23,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:22:23,620 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 176 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:23,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 164 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:22:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-02-10 03:22:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 240. [2022-02-10 03:22:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.502092050209205) internal successors, (598), 239 states have internal predecessors, (598), 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 03:22:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 598 transitions. [2022-02-10 03:22:23,623 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 598 transitions. Word has length 20 [2022-02-10 03:22:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:23,624 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 598 transitions. [2022-02-10 03:22:23,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 598 transitions. [2022-02-10 03:22:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:23,624 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:23,624 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] [2022-02-10 03:22:23,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 03:22:23,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:23,825 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:23,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1334004275, now seen corresponding path program 57 times [2022-02-10 03:22:23,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:23,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167304476] [2022-02-10 03:22:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:23,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:24,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:24,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167304476] [2022-02-10 03:22:24,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167304476] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:24,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393425176] [2022-02-10 03:22:24,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:22:24,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:24,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:24,099 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 03:22:24,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:22:24,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:24,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:24,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:24,329 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 101 treesize of output 85 [2022-02-10 03:22:24,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:24,690 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 163 [2022-02-10 03:22:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:24,693 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 139 [2022-02-10 03:22:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:26,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:27,200 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:27,201 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 139 treesize of output 131 [2022-02-10 03:22:27,776 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:27,776 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 131 treesize of output 123 [2022-02-10 03:22:27,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:27,786 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 115 treesize of output 107 [2022-02-10 03:22:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:28,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393425176] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:28,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:28,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:22:28,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132210941] [2022-02-10 03:22:28,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:28,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:22:28,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:22:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:22:28,193 INFO L87 Difference]: Start difference. First operand 240 states and 598 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:30,965 INFO L93 Difference]: Finished difference Result 429 states and 912 transitions. [2022-02-10 03:22:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:22:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:22:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:30,966 INFO L225 Difference]: With dead ends: 429 [2022-02-10 03:22:30,966 INFO L226 Difference]: Without dead ends: 401 [2022-02-10 03:22:30,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=281, Invalid=1699, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:22:30,967 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:30,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 260 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:22:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-02-10 03:22:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 240. [2022-02-10 03:22:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.510460251046025) internal successors, (600), 239 states have internal predecessors, (600), 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 03:22:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 600 transitions. [2022-02-10 03:22:30,970 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 600 transitions. Word has length 20 [2022-02-10 03:22:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:30,971 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 600 transitions. [2022-02-10 03:22:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 600 transitions. [2022-02-10 03:22:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:30,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:30,971 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] [2022-02-10 03:22:30,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-10 03:22:31,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:31,172 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1596470029, now seen corresponding path program 58 times [2022-02-10 03:22:31,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:31,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492378779] [2022-02-10 03:22:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:31,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:31,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:31,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492378779] [2022-02-10 03:22:31,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492378779] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:31,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230846391] [2022-02-10 03:22:31,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:22:31,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:31,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:31,458 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:31,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-10 03:22:31,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:22:31,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:31,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:31,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:31,720 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 109 treesize of output 91 [2022-02-10 03:22:32,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:32,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 159 [2022-02-10 03:22:32,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:32,215 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-02-10 03:22:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:34,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:34,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:34,918 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 135 treesize of output 127 [2022-02-10 03:22:35,383 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:35,383 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 140 treesize of output 128 [2022-02-10 03:22:35,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:35,390 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 120 treesize of output 108 [2022-02-10 03:22:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:35,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230846391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:35,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:35,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:22:35,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482844513] [2022-02-10 03:22:35,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:35,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:22:35,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:35,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:22:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:22:35,728 INFO L87 Difference]: Start difference. First operand 240 states and 600 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:38,080 INFO L93 Difference]: Finished difference Result 392 states and 863 transitions. [2022-02-10 03:22:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:22:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:22:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:38,081 INFO L225 Difference]: With dead ends: 392 [2022-02-10 03:22:38,081 INFO L226 Difference]: Without dead ends: 360 [2022-02-10 03:22:38,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=257, Invalid=1635, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 03:22:38,082 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 197 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:38,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 197 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:22:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-02-10 03:22:38,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 240. [2022-02-10 03:22:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.510460251046025) internal successors, (600), 239 states have internal predecessors, (600), 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 03:22:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 600 transitions. [2022-02-10 03:22:38,085 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 600 transitions. Word has length 20 [2022-02-10 03:22:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:38,085 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 600 transitions. [2022-02-10 03:22:38,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 600 transitions. [2022-02-10 03:22:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:38,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:38,085 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] [2022-02-10 03:22:38,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-10 03:22:38,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:38,286 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:38,286 INFO L85 PathProgramCache]: Analyzing trace with hash -540576183, now seen corresponding path program 59 times [2022-02-10 03:22:38,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:38,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801404639] [2022-02-10 03:22:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:38,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:38,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:38,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801404639] [2022-02-10 03:22:38,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801404639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:38,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632516152] [2022-02-10 03:22:38,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:22:38,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:38,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:38,525 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:38,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-10 03:22:38,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:22:38,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:38,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:38,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:38,874 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 137 treesize of output 119 [2022-02-10 03:22:39,529 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 167 treesize of output 145 [2022-02-10 03:22:39,531 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 145 treesize of output 123 [2022-02-10 03:22:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:40,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:40,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:40,314 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 78 treesize of output 72 [2022-02-10 03:22:40,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:40,614 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 115 treesize of output 105 [2022-02-10 03:22:40,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:40,622 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 97 treesize of output 87 [2022-02-10 03:22:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:40,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632516152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:40,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:40,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:22:40,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667515098] [2022-02-10 03:22:40,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:40,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:22:40,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:22:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:22:40,847 INFO L87 Difference]: Start difference. First operand 240 states and 600 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:22:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:41,926 INFO L93 Difference]: Finished difference Result 272 states and 651 transitions. [2022-02-10 03:22:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:22:41,926 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:22:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:41,927 INFO L225 Difference]: With dead ends: 272 [2022-02-10 03:22:41,927 INFO L226 Difference]: Without dead ends: 256 [2022-02-10 03:22:41,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:22:41,927 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:41,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 135 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:22:41,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-10 03:22:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 244. [2022-02-10 03:22:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.506172839506173) internal successors, (609), 243 states have internal predecessors, (609), 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 03:22:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 609 transitions. [2022-02-10 03:22:41,931 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 609 transitions. Word has length 20 [2022-02-10 03:22:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:41,931 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 609 transitions. [2022-02-10 03:22:41,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:22:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 609 transitions. [2022-02-10 03:22:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:41,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:41,932 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] [2022-02-10 03:22:41,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-02-10 03:22:42,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:42,133 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1133383399, now seen corresponding path program 60 times [2022-02-10 03:22:42,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:42,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268040939] [2022-02-10 03:22:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:42,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:42,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:42,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268040939] [2022-02-10 03:22:42,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268040939] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:42,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323476485] [2022-02-10 03:22:42,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:22:42,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:42,371 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:42,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-10 03:22:42,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:22:42,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:42,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:22:42,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:42,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:42,680 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2022-02-10 03:22:43,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:43,359 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 153 [2022-02-10 03:22:43,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:43,363 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 129 [2022-02-10 03:22:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:44,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:44,871 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:44,872 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 122 treesize of output 112 [2022-02-10 03:22:45,628 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:45,628 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 163 treesize of output 151 [2022-02-10 03:22:45,637 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:45,638 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 143 treesize of output 131 [2022-02-10 03:22:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:45,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323476485] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:45,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:45,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:22:45,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052481051] [2022-02-10 03:22:45,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:45,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:22:45,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:45,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:22:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:22:45,892 INFO L87 Difference]: Start difference. First operand 244 states and 609 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:47,600 INFO L93 Difference]: Finished difference Result 329 states and 767 transitions. [2022-02-10 03:22:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:22:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:22:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:47,601 INFO L225 Difference]: With dead ends: 329 [2022-02-10 03:22:47,601 INFO L226 Difference]: Without dead ends: 317 [2022-02-10 03:22:47,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:22:47,601 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 86 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:47,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 165 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 847 Invalid, 0 Unknown, 11 Unchecked, 0.4s Time] [2022-02-10 03:22:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-02-10 03:22:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 247. [2022-02-10 03:22:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.5121951219512195) internal successors, (618), 246 states have internal predecessors, (618), 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 03:22:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 618 transitions. [2022-02-10 03:22:47,605 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 618 transitions. Word has length 20 [2022-02-10 03:22:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:47,605 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 618 transitions. [2022-02-10 03:22:47,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 618 transitions. [2022-02-10 03:22:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:47,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:47,605 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] [2022-02-10 03:22:47,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-10 03:22:47,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:47,806 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash 771401289, now seen corresponding path program 61 times [2022-02-10 03:22:47,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:47,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733344835] [2022-02-10 03:22:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:47,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:48,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:48,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733344835] [2022-02-10 03:22:48,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733344835] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:48,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425709125] [2022-02-10 03:22:48,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:22:48,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:48,138 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:48,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-10 03:22:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:48,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:22:48,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:48,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:48,525 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 108 [2022-02-10 03:22:49,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:49,273 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 176 [2022-02-10 03:22:49,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:49,277 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 152 [2022-02-10 03:22:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:50,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:51,490 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:51,491 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 138 treesize of output 128 [2022-02-10 03:22:51,953 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:51,953 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 137 treesize of output 125 [2022-02-10 03:22:51,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:51,959 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 117 treesize of output 105 [2022-02-10 03:22:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:52,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425709125] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:52,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:52,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:22:52,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198050176] [2022-02-10 03:22:52,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:52,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:22:52,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:22:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:22:52,298 INFO L87 Difference]: Start difference. First operand 247 states and 618 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:53,670 INFO L93 Difference]: Finished difference Result 305 states and 715 transitions. [2022-02-10 03:22:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:22:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:22:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:53,671 INFO L225 Difference]: With dead ends: 305 [2022-02-10 03:22:53,671 INFO L226 Difference]: Without dead ends: 291 [2022-02-10 03:22:53,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:22:53,672 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:53,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 259 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 870 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2022-02-10 03:22:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-10 03:22:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 247. [2022-02-10 03:22:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.5121951219512195) internal successors, (618), 246 states have internal predecessors, (618), 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 03:22:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 618 transitions. [2022-02-10 03:22:53,676 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 618 transitions. Word has length 20 [2022-02-10 03:22:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:53,676 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 618 transitions. [2022-02-10 03:22:53,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:22:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 618 transitions. [2022-02-10 03:22:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:53,677 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:53,677 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] [2022-02-10 03:22:53,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-10 03:22:53,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-10 03:22:53,900 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2121348099, now seen corresponding path program 62 times [2022-02-10 03:22:53,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:53,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550683248] [2022-02-10 03:22:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:53,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:54,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:54,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550683248] [2022-02-10 03:22:54,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550683248] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:54,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074564357] [2022-02-10 03:22:54,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:22:54,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:54,179 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:54,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-10 03:22:54,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:22:54,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:54,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:22:54,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:54,490 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 113 treesize of output 97 [2022-02-10 03:22:54,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:54,824 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 183 [2022-02-10 03:22:54,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:54,827 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-02-10 03:22:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:55,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:22:56,005 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:56,005 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 120 treesize of output 112 [2022-02-10 03:22:56,454 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:56,454 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 137 treesize of output 125 [2022-02-10 03:22:56,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:22:56,461 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 117 treesize of output 105 [2022-02-10 03:22:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:56,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074564357] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:22:56,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:22:56,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:22:56,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221389284] [2022-02-10 03:22:56,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:22:56,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:22:56,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:22:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:22:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:22:56,716 INFO L87 Difference]: Start difference. First operand 247 states and 618 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:22:57,878 INFO L93 Difference]: Finished difference Result 291 states and 686 transitions. [2022-02-10 03:22:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:22:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:22:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:22:57,879 INFO L225 Difference]: With dead ends: 291 [2022-02-10 03:22:57,879 INFO L226 Difference]: Without dead ends: 267 [2022-02-10 03:22:57,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:22:57,879 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:22:57,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 135 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:22:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-02-10 03:22:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2022-02-10 03:22:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.5121951219512195) internal successors, (618), 246 states have internal predecessors, (618), 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 03:22:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 618 transitions. [2022-02-10 03:22:57,882 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 618 transitions. Word has length 20 [2022-02-10 03:22:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:22:57,882 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 618 transitions. [2022-02-10 03:22:57,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:22:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 618 transitions. [2022-02-10 03:22:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:22:57,883 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:22:57,883 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] [2022-02-10 03:22:57,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-10 03:22:58,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-02-10 03:22:58,083 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:22:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:22:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -610686219, now seen corresponding path program 63 times [2022-02-10 03:22:58,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:22:58,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694930018] [2022-02-10 03:22:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:22:58,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:22:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:22:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:22:58,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:22:58,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694930018] [2022-02-10 03:22:58,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694930018] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:22:58,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151726543] [2022-02-10 03:22:58,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:22:58,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:22:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:22:58,346 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:22:58,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-10 03:22:58,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:22:58,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:22:58,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:22:58,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:22:58,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:22:58,541 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:23:00,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:00,097 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 155 [2022-02-10 03:23:00,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:00,100 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 129 [2022-02-10 03:23:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:00,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:01,695 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:01,696 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 153 treesize of output 141 [2022-02-10 03:23:02,402 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:02,402 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 149 treesize of output 137 [2022-02-10 03:23:02,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:02,412 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 129 treesize of output 117 [2022-02-10 03:23:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:02,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151726543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:02,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:02,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:23:02,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244828033] [2022-02-10 03:23:02,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:23:02,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:23:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:23:02,700 INFO L87 Difference]: Start difference. First operand 247 states and 618 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:23:03,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:03,396 INFO L93 Difference]: Finished difference Result 286 states and 688 transitions. [2022-02-10 03:23:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:23:03,397 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:23:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:03,397 INFO L225 Difference]: With dead ends: 286 [2022-02-10 03:23:03,397 INFO L226 Difference]: Without dead ends: 274 [2022-02-10 03:23:03,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:23:03,398 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:03,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 157 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 430 Invalid, 0 Unknown, 187 Unchecked, 0.2s Time] [2022-02-10 03:23:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-02-10 03:23:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 248. [2022-02-10 03:23:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.522267206477733) internal successors, (623), 247 states have internal predecessors, (623), 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 03:23:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 623 transitions. [2022-02-10 03:23:03,401 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 623 transitions. Word has length 20 [2022-02-10 03:23:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:03,401 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 623 transitions. [2022-02-10 03:23:03,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:23:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 623 transitions. [2022-02-10 03:23:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:03,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:03,401 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] [2022-02-10 03:23:03,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-10 03:23:03,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-02-10 03:23:03,602 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1063273363, now seen corresponding path program 64 times [2022-02-10 03:23:03,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:03,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761777679] [2022-02-10 03:23:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:03,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:03,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:03,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761777679] [2022-02-10 03:23:03,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761777679] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:03,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690628766] [2022-02-10 03:23:03,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:23:03,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:03,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:03,972 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:03,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-10 03:23:03,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:23:03,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:03,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:23:04,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:04,184 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:23:06,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:06,073 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 155 [2022-02-10 03:23:06,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:06,077 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 133 [2022-02-10 03:23:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:07,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:09,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:09,077 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 209 treesize of output 189 [2022-02-10 03:23:10,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:10,603 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 176 treesize of output 156 [2022-02-10 03:23:10,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:10,610 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 148 treesize of output 128 [2022-02-10 03:23:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:10,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690628766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:10,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:10,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:23:10,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242387188] [2022-02-10 03:23:10,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:10,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:23:10,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:23:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:23:10,834 INFO L87 Difference]: Start difference. First operand 248 states and 623 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:11,738 INFO L93 Difference]: Finished difference Result 294 states and 704 transitions. [2022-02-10 03:23:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:23:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:23:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:11,739 INFO L225 Difference]: With dead ends: 294 [2022-02-10 03:23:11,739 INFO L226 Difference]: Without dead ends: 288 [2022-02-10 03:23:11,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:23:11,739 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:11,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 115 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 502 Invalid, 0 Unknown, 6 Unchecked, 0.3s Time] [2022-02-10 03:23:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-02-10 03:23:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 248. [2022-02-10 03:23:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.522267206477733) internal successors, (623), 247 states have internal predecessors, (623), 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 03:23:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 623 transitions. [2022-02-10 03:23:11,742 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 623 transitions. Word has length 20 [2022-02-10 03:23:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:11,742 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 623 transitions. [2022-02-10 03:23:11,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 623 transitions. [2022-02-10 03:23:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:11,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:11,743 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] [2022-02-10 03:23:11,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-10 03:23:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:11,966 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash 701291253, now seen corresponding path program 65 times [2022-02-10 03:23:11,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:11,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051807137] [2022-02-10 03:23:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:11,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:12,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:12,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051807137] [2022-02-10 03:23:12,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051807137] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:12,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141414888] [2022-02-10 03:23:12,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:23:12,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:12,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:12,253 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:12,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-10 03:23:12,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:23:12,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:23:12,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:12,392 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 101 treesize of output 85 [2022-02-10 03:23:12,806 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 160 treesize of output 140 [2022-02-10 03:23:12,808 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 140 treesize of output 120 [2022-02-10 03:23:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:13,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:14,262 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:14,262 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 126 treesize of output 118 [2022-02-10 03:23:14,701 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:14,702 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 131 treesize of output 121 [2022-02-10 03:23:14,708 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:14,708 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 113 treesize of output 103 [2022-02-10 03:23:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:14,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141414888] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:14,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:14,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:23:14,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644194135] [2022-02-10 03:23:14,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:14,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:23:14,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:14,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:23:14,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:23:14,866 INFO L87 Difference]: Start difference. First operand 248 states and 623 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:23:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:16,756 INFO L93 Difference]: Finished difference Result 334 states and 777 transitions. [2022-02-10 03:23:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:23:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:23:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:16,757 INFO L225 Difference]: With dead ends: 334 [2022-02-10 03:23:16,757 INFO L226 Difference]: Without dead ends: 320 [2022-02-10 03:23:16,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:23:16,757 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 113 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:16,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 227 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:23:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-02-10 03:23:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 251. [2022-02-10 03:23:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.54) internal successors, (635), 250 states have internal predecessors, (635), 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 03:23:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 635 transitions. [2022-02-10 03:23:16,761 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 635 transitions. Word has length 20 [2022-02-10 03:23:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 635 transitions. [2022-02-10 03:23:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:23:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 635 transitions. [2022-02-10 03:23:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:16,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:16,761 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] [2022-02-10 03:23:16,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-10 03:23:16,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:16,962 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1703160467, now seen corresponding path program 66 times [2022-02-10 03:23:16,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:16,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522481026] [2022-02-10 03:23:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:16,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:17,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:17,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522481026] [2022-02-10 03:23:17,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522481026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:17,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427853650] [2022-02-10 03:23:17,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:23:17,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:17,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:17,228 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:17,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-10 03:23:17,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:23:17,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:23:17,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:17,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:17,456 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:23:19,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:19,694 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 148 [2022-02-10 03:23:19,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:19,699 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 126 [2022-02-10 03:23:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:20,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:21,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:21,194 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 122 treesize of output 112 [2022-02-10 03:23:22,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:22,144 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 162 treesize of output 148 [2022-02-10 03:23:22,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:22,152 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 140 treesize of output 126 [2022-02-10 03:23:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:22,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427853650] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:22,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:22,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:23:22,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157011481] [2022-02-10 03:23:22,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:22,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:23:22,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:23:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:23:22,414 INFO L87 Difference]: Start difference. First operand 251 states and 635 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:23:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:23,376 INFO L93 Difference]: Finished difference Result 302 states and 728 transitions. [2022-02-10 03:23:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:23:23,376 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:23:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:23,376 INFO L225 Difference]: With dead ends: 302 [2022-02-10 03:23:23,377 INFO L226 Difference]: Without dead ends: 290 [2022-02-10 03:23:23,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:23:23,377 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:23,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 549 Invalid, 0 Unknown, 180 Unchecked, 0.3s Time] [2022-02-10 03:23:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-02-10 03:23:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 253. [2022-02-10 03:23:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.5357142857142856) internal successors, (639), 252 states have internal predecessors, (639), 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 03:23:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 639 transitions. [2022-02-10 03:23:23,380 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 639 transitions. Word has length 20 [2022-02-10 03:23:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:23,380 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 639 transitions. [2022-02-10 03:23:23,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:23:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 639 transitions. [2022-02-10 03:23:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:23,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:23,381 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] [2022-02-10 03:23:23,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-10 03:23:23,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:23,581 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:23,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2056577027, now seen corresponding path program 67 times [2022-02-10 03:23:23,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:23,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333235354] [2022-02-10 03:23:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:23,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:23,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:23,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333235354] [2022-02-10 03:23:23,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333235354] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:23,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915376298] [2022-02-10 03:23:23,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:23:23,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:23,953 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-10 03:23:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:23,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:23:23,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:24,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:24,183 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:23:27,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:27,221 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 157 [2022-02-10 03:23:27,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:27,224 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 137 [2022-02-10 03:23:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:28,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:29,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:29,897 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 139 treesize of output 131 [2022-02-10 03:23:30,406 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:30,406 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 144 treesize of output 132 [2022-02-10 03:23:30,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:30,412 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 124 treesize of output 112 [2022-02-10 03:23:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:30,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915376298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:30,631 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:30,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:23:30,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472595161] [2022-02-10 03:23:30,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:30,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:23:30,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:23:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:23:30,632 INFO L87 Difference]: Start difference. First operand 253 states and 639 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:31,191 INFO L93 Difference]: Finished difference Result 287 states and 692 transitions. [2022-02-10 03:23:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:23:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:23:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:31,192 INFO L225 Difference]: With dead ends: 287 [2022-02-10 03:23:31,192 INFO L226 Difference]: Without dead ends: 281 [2022-02-10 03:23:31,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:23:31,192 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:31,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 107 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 464 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-02-10 03:23:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-02-10 03:23:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 253. [2022-02-10 03:23:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.5357142857142856) internal successors, (639), 252 states have internal predecessors, (639), 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 03:23:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 639 transitions. [2022-02-10 03:23:31,195 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 639 transitions. Word has length 20 [2022-02-10 03:23:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:31,196 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 639 transitions. [2022-02-10 03:23:31,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 639 transitions. [2022-02-10 03:23:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:31,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:31,196 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] [2022-02-10 03:23:31,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-10 03:23:31,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:31,397 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:31,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash 372963295, now seen corresponding path program 68 times [2022-02-10 03:23:31,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:31,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78107332] [2022-02-10 03:23:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:31,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:31,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:31,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78107332] [2022-02-10 03:23:31,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78107332] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:31,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48035641] [2022-02-10 03:23:31,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:23:31,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:31,624 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:31,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-10 03:23:31,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:23:31,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:31,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:23:31,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:31,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:31,802 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-02-10 03:23:33,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:33,157 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 146 [2022-02-10 03:23:33,160 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 146 treesize of output 124 [2022-02-10 03:23:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:34,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:34,641 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:34,641 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 90 treesize of output 84 [2022-02-10 03:23:34,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:34,905 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 127 treesize of output 115 [2022-02-10 03:23:34,912 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:34,912 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 107 treesize of output 95 [2022-02-10 03:23:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:35,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48035641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:35,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:35,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:23:35,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600270133] [2022-02-10 03:23:35,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:35,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:23:35,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:35,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:23:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:23:35,166 INFO L87 Difference]: Start difference. First operand 253 states and 639 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:23:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:36,213 INFO L93 Difference]: Finished difference Result 307 states and 724 transitions. [2022-02-10 03:23:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:23:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:23:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:36,214 INFO L225 Difference]: With dead ends: 307 [2022-02-10 03:23:36,214 INFO L226 Difference]: Without dead ends: 288 [2022-02-10 03:23:36,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:23:36,215 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:36,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 170 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 653 Invalid, 0 Unknown, 22 Unchecked, 0.3s Time] [2022-02-10 03:23:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-02-10 03:23:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 256. [2022-02-10 03:23:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.541176470588235) internal successors, (648), 255 states have internal predecessors, (648), 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 03:23:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 648 transitions. [2022-02-10 03:23:36,218 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 648 transitions. Word has length 20 [2022-02-10 03:23:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 648 transitions. [2022-02-10 03:23:36,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:23:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 648 transitions. [2022-02-10 03:23:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:36,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:36,218 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] [2022-02-10 03:23:36,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-10 03:23:36,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:36,419 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:36,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash 23037565, now seen corresponding path program 69 times [2022-02-10 03:23:36,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:36,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730149192] [2022-02-10 03:23:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:36,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:36,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:36,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730149192] [2022-02-10 03:23:36,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730149192] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:36,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267662794] [2022-02-10 03:23:36,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:23:36,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:36,679 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:36,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-10 03:23:36,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:23:36,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:36,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:23:36,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:36,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:36,866 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:23:37,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:37,472 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 147 [2022-02-10 03:23:37,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:37,476 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 123 [2022-02-10 03:23:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:38,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:39,482 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:39,482 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 107 treesize of output 99 [2022-02-10 03:23:40,377 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:40,378 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 178 treesize of output 160 [2022-02-10 03:23:40,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:40,387 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 152 treesize of output 134 [2022-02-10 03:23:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:40,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267662794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:40,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:40,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:23:40,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83594105] [2022-02-10 03:23:40,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:40,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:23:40,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:40,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:23:40,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:23:40,648 INFO L87 Difference]: Start difference. First operand 256 states and 648 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:42,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:42,027 INFO L93 Difference]: Finished difference Result 346 states and 819 transitions. [2022-02-10 03:23:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:23:42,027 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:23:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:42,028 INFO L225 Difference]: With dead ends: 346 [2022-02-10 03:23:42,028 INFO L226 Difference]: Without dead ends: 340 [2022-02-10 03:23:42,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:23:42,028 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 96 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:42,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 109 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 555 Invalid, 0 Unknown, 102 Unchecked, 0.3s Time] [2022-02-10 03:23:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-02-10 03:23:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 257. [2022-02-10 03:23:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.5546875) internal successors, (654), 256 states have internal predecessors, (654), 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 03:23:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 654 transitions. [2022-02-10 03:23:42,033 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 654 transitions. Word has length 20 [2022-02-10 03:23:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:42,033 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 654 transitions. [2022-02-10 03:23:42,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 654 transitions. [2022-02-10 03:23:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:42,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:42,034 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] [2022-02-10 03:23:42,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-10 03:23:42,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:42,239 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -338944545, now seen corresponding path program 70 times [2022-02-10 03:23:42,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:42,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130291322] [2022-02-10 03:23:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:42,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:42,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:42,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130291322] [2022-02-10 03:23:42,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130291322] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:42,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845072843] [2022-02-10 03:23:42,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:23:42,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:42,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:42,525 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:42,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-10 03:23:42,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:23:42,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:42,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:23:42,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:42,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:42,720 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:23:43,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:43,653 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 158 [2022-02-10 03:23:43,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:43,657 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 136 [2022-02-10 03:23:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:46,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:46,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:46,798 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 103 treesize of output 95 [2022-02-10 03:23:47,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:47,918 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 177 treesize of output 159 [2022-02-10 03:23:47,929 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:47,929 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 151 treesize of output 133 [2022-02-10 03:23:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:48,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845072843] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:48,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:48,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:23:48,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28838923] [2022-02-10 03:23:48,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:48,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:23:48,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:23:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:23:48,212 INFO L87 Difference]: Start difference. First operand 257 states and 654 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:50,007 INFO L93 Difference]: Finished difference Result 344 states and 815 transitions. [2022-02-10 03:23:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:23:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:23:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:50,008 INFO L225 Difference]: With dead ends: 344 [2022-02-10 03:23:50,008 INFO L226 Difference]: Without dead ends: 337 [2022-02-10 03:23:50,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:23:50,009 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 119 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:50,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 113 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 549 Invalid, 0 Unknown, 10 Unchecked, 0.3s Time] [2022-02-10 03:23:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-02-10 03:23:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 257. [2022-02-10 03:23:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.5546875) internal successors, (654), 256 states have internal predecessors, (654), 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 03:23:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 654 transitions. [2022-02-10 03:23:50,012 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 654 transitions. Word has length 20 [2022-02-10 03:23:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:50,012 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 654 transitions. [2022-02-10 03:23:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:23:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 654 transitions. [2022-02-10 03:23:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:50,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:50,013 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] [2022-02-10 03:23:50,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-02-10 03:23:50,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:50,214 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1703437537, now seen corresponding path program 71 times [2022-02-10 03:23:50,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:50,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431765905] [2022-02-10 03:23:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:50,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:50,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:50,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431765905] [2022-02-10 03:23:50,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431765905] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:50,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473678525] [2022-02-10 03:23:50,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:23:50,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:50,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:50,684 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:50,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-10 03:23:50,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:23:50,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:50,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:23:50,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:50,840 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 121 treesize of output 103 [2022-02-10 03:23:51,184 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 202 treesize of output 174 [2022-02-10 03:23:51,186 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 174 treesize of output 146 [2022-02-10 03:23:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:52,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:23:53,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:53,697 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 117 treesize of output 109 [2022-02-10 03:23:54,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:54,007 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 107 treesize of output 99 [2022-02-10 03:23:54,013 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:23:54,013 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 91 treesize of output 83 [2022-02-10 03:23:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:54,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473678525] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:23:54,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:23:54,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:23:54,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116928959] [2022-02-10 03:23:54,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:23:54,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:23:54,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:23:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:23:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:23:54,201 INFO L87 Difference]: Start difference. First operand 257 states and 654 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:23:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:23:57,036 INFO L93 Difference]: Finished difference Result 389 states and 883 transitions. [2022-02-10 03:23:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:23:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:23:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:23:57,037 INFO L225 Difference]: With dead ends: 389 [2022-02-10 03:23:57,037 INFO L226 Difference]: Without dead ends: 377 [2022-02-10 03:23:57,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:23:57,038 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 181 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:23:57,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 175 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:23:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-02-10 03:23:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 267. [2022-02-10 03:23:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.6165413533834587) internal successors, (696), 266 states have internal predecessors, (696), 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 03:23:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 696 transitions. [2022-02-10 03:23:57,041 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 696 transitions. Word has length 20 [2022-02-10 03:23:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:23:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 696 transitions. [2022-02-10 03:23:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:23:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 696 transitions. [2022-02-10 03:23:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:23:57,042 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:23:57,042 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] [2022-02-10 03:23:57,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-10 03:23:57,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-02-10 03:23:57,243 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:23:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:23:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 726102785, now seen corresponding path program 72 times [2022-02-10 03:23:57,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:23:57,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052883251] [2022-02-10 03:23:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:23:57,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:23:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:23:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:23:57,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:23:57,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052883251] [2022-02-10 03:23:57,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052883251] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:23:57,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973248679] [2022-02-10 03:23:57,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:23:57,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:23:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:23:57,609 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:23:57,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-10 03:23:57,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 03:23:57,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:23:57,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:23:57,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:23:57,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:57,790 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-02-10 03:23:58,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:23:58,629 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 162 [2022-02-10 03:23:58,632 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 162 treesize of output 138 [2022-02-10 03:24:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:00,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:01,326 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:01,327 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 90 treesize of output 84 [2022-02-10 03:24:01,735 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:01,736 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 139 treesize of output 129 [2022-02-10 03:24:01,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:01,744 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 121 treesize of output 111 [2022-02-10 03:24:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:02,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973248679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:02,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:02,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:02,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769380893] [2022-02-10 03:24:02,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:02,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:02,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:02,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:02,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:02,180 INFO L87 Difference]: Start difference. First operand 267 states and 696 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:05,273 INFO L93 Difference]: Finished difference Result 359 states and 833 transitions. [2022-02-10 03:24:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:24:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:05,274 INFO L225 Difference]: With dead ends: 359 [2022-02-10 03:24:05,274 INFO L226 Difference]: Without dead ends: 334 [2022-02-10 03:24:05,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 03:24:05,275 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 123 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:05,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 240 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1018 Invalid, 0 Unknown, 25 Unchecked, 0.5s Time] [2022-02-10 03:24:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-02-10 03:24:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 267. [2022-02-10 03:24:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.6353383458646618) internal successors, (701), 266 states have internal predecessors, (701), 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 03:24:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 701 transitions. [2022-02-10 03:24:05,278 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 701 transitions. Word has length 20 [2022-02-10 03:24:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:05,278 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 701 transitions. [2022-02-10 03:24:05,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 701 transitions. [2022-02-10 03:24:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:05,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:05,279 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] [2022-02-10 03:24:05,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-10 03:24:05,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:05,479 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 947471839, now seen corresponding path program 73 times [2022-02-10 03:24:05,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:05,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466707974] [2022-02-10 03:24:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:05,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:05,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:05,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466707974] [2022-02-10 03:24:05,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466707974] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:05,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488822359] [2022-02-10 03:24:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:24:05,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:05,801 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-10 03:24:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:24:05,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:06,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:06,000 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:24:07,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:07,313 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-02-10 03:24:07,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:07,317 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 122 [2022-02-10 03:24:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:08,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:09,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:09,018 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 103 treesize of output 95 [2022-02-10 03:24:09,692 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:09,692 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 177 treesize of output 159 [2022-02-10 03:24:09,699 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:09,699 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 151 treesize of output 133 [2022-02-10 03:24:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:09,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488822359] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:09,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:09,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 03:24:09,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367613054] [2022-02-10 03:24:09,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:09,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 03:24:09,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:09,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 03:24:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-02-10 03:24:09,931 INFO L87 Difference]: Start difference. First operand 267 states and 701 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:24:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:12,668 INFO L93 Difference]: Finished difference Result 359 states and 875 transitions. [2022-02-10 03:24:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 03:24:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 20 [2022-02-10 03:24:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:12,669 INFO L225 Difference]: With dead ends: 359 [2022-02-10 03:24:12,669 INFO L226 Difference]: Without dead ends: 347 [2022-02-10 03:24:12,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 03:24:12,669 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 64 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:12,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 162 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 723 Invalid, 0 Unknown, 9 Unchecked, 0.4s Time] [2022-02-10 03:24:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-02-10 03:24:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 267. [2022-02-10 03:24:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.6353383458646618) internal successors, (701), 266 states have internal predecessors, (701), 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 03:24:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 701 transitions. [2022-02-10 03:24:12,674 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 701 transitions. Word has length 20 [2022-02-10 03:24:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:12,674 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 701 transitions. [2022-02-10 03:24:12,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 03:24:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 701 transitions. [2022-02-10 03:24:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:12,675 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:12,675 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] [2022-02-10 03:24:12,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-10 03:24:12,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-10 03:24:12,891 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash -8919469, now seen corresponding path program 74 times [2022-02-10 03:24:12,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:12,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112611211] [2022-02-10 03:24:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:12,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:13,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:13,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112611211] [2022-02-10 03:24:13,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112611211] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:13,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472656860] [2022-02-10 03:24:13,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:24:13,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:13,143 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:13,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-10 03:24:13,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:24:13,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:24:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:13,362 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 101 treesize of output 85 [2022-02-10 03:24:13,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:13,967 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-02-10 03:24:13,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:13,970 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 105 [2022-02-10 03:24:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:14,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:15,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:15,566 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 133 treesize of output 123 [2022-02-10 03:24:16,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:16,332 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 170 treesize of output 156 [2022-02-10 03:24:16,340 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:16,340 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 148 treesize of output 134 [2022-02-10 03:24:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:16,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472656860] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:16,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:16,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:16,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770666646] [2022-02-10 03:24:16,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:16,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:16,613 INFO L87 Difference]: Start difference. First operand 267 states and 701 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:18,816 INFO L93 Difference]: Finished difference Result 385 states and 922 transitions. [2022-02-10 03:24:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:24:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:18,817 INFO L225 Difference]: With dead ends: 385 [2022-02-10 03:24:18,817 INFO L226 Difference]: Without dead ends: 353 [2022-02-10 03:24:18,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=226, Invalid=1496, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:24:18,817 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:18,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 209 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:24:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-10 03:24:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 272. [2022-02-10 03:24:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.6642066420664205) internal successors, (722), 271 states have internal predecessors, (722), 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 03:24:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 722 transitions. [2022-02-10 03:24:18,821 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 722 transitions. Word has length 20 [2022-02-10 03:24:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:18,821 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 722 transitions. [2022-02-10 03:24:18,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 722 transitions. [2022-02-10 03:24:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:18,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:18,821 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] [2022-02-10 03:24:18,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-10 03:24:19,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-10 03:24:19,022 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2089391065, now seen corresponding path program 75 times [2022-02-10 03:24:19,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:19,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175182399] [2022-02-10 03:24:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:19,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:19,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:19,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175182399] [2022-02-10 03:24:19,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175182399] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:19,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778393350] [2022-02-10 03:24:19,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:24:19,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:19,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:19,296 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-10 03:24:19,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 03:24:19,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:19,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:24:19,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:19,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:19,473 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:24:20,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:20,248 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 147 [2022-02-10 03:24:20,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:20,253 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 123 [2022-02-10 03:24:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:22,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:22,844 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:22,844 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 125 treesize of output 117 [2022-02-10 03:24:23,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:23,686 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 153 treesize of output 141 [2022-02-10 03:24:23,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:23,697 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 133 treesize of output 121 [2022-02-10 03:24:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:23,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778393350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:23,981 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:23,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:24:23,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197682769] [2022-02-10 03:24:23,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:23,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:24:23,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:24:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:24:23,982 INFO L87 Difference]: Start difference. First operand 272 states and 722 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:24:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:25,580 INFO L93 Difference]: Finished difference Result 355 states and 878 transitions. [2022-02-10 03:24:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 03:24:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:24:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:25,581 INFO L225 Difference]: With dead ends: 355 [2022-02-10 03:24:25,581 INFO L226 Difference]: Without dead ends: 349 [2022-02-10 03:24:25,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:24:25,582 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 75 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:25,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 131 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 649 Invalid, 0 Unknown, 126 Unchecked, 0.3s Time] [2022-02-10 03:24:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-10 03:24:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 274. [2022-02-10 03:24:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.6849816849816848) internal successors, (733), 273 states have internal predecessors, (733), 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 03:24:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 733 transitions. [2022-02-10 03:24:25,585 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 733 transitions. Word has length 20 [2022-02-10 03:24:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:25,585 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 733 transitions. [2022-02-10 03:24:25,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:24:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 733 transitions. [2022-02-10 03:24:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:25,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:25,586 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] [2022-02-10 03:24:25,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-10 03:24:25,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-02-10 03:24:25,786 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1843594121, now seen corresponding path program 76 times [2022-02-10 03:24:25,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:25,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521410176] [2022-02-10 03:24:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:25,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:26,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:26,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521410176] [2022-02-10 03:24:26,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521410176] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:26,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244527256] [2022-02-10 03:24:26,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:24:26,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:26,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:26,163 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:26,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-10 03:24:26,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:24:26,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:26,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:24:26,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:26,439 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 101 treesize of output 85 [2022-02-10 03:24:26,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:26,788 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 139 [2022-02-10 03:24:26,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:26,791 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 117 [2022-02-10 03:24:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:27,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:28,477 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:28,477 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 125 treesize of output 117 [2022-02-10 03:24:29,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:29,104 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 153 treesize of output 143 [2022-02-10 03:24:29,111 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:29,112 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 135 treesize of output 125 [2022-02-10 03:24:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:29,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244527256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:29,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:29,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:29,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001505032] [2022-02-10 03:24:29,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:29,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:29,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:29,333 INFO L87 Difference]: Start difference. First operand 274 states and 733 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:32,252 INFO L93 Difference]: Finished difference Result 456 states and 1042 transitions. [2022-02-10 03:24:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 03:24:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:32,253 INFO L225 Difference]: With dead ends: 456 [2022-02-10 03:24:32,253 INFO L226 Difference]: Without dead ends: 428 [2022-02-10 03:24:32,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=296, Invalid=1774, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:24:32,253 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 207 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:32,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 232 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:24:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-02-10 03:24:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 275. [2022-02-10 03:24:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.708029197080292) internal successors, (742), 274 states have internal predecessors, (742), 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 03:24:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 742 transitions. [2022-02-10 03:24:32,258 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 742 transitions. Word has length 20 [2022-02-10 03:24:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 742 transitions. [2022-02-10 03:24:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 742 transitions. [2022-02-10 03:24:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:32,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:32,259 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] [2022-02-10 03:24:32,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-10 03:24:32,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:32,463 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 479101129, now seen corresponding path program 77 times [2022-02-10 03:24:32,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:32,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146087799] [2022-02-10 03:24:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:32,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:32,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:32,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146087799] [2022-02-10 03:24:32,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146087799] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:32,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403016638] [2022-02-10 03:24:32,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:24:32,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:32,699 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:32,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-10 03:24:32,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:24:32,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:32,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:24:32,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:32,841 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 109 treesize of output 91 [2022-02-10 03:24:33,189 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 170 treesize of output 148 [2022-02-10 03:24:33,191 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 148 treesize of output 126 [2022-02-10 03:24:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:34,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:35,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:35,837 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 116 treesize of output 108 [2022-02-10 03:24:36,146 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:36,146 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 127 treesize of output 117 [2022-02-10 03:24:36,153 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:36,153 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 109 treesize of output 99 [2022-02-10 03:24:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:36,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403016638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:36,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:36,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:24:36,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870830367] [2022-02-10 03:24:36,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:36,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:24:36,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:24:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:24:36,309 INFO L87 Difference]: Start difference. First operand 275 states and 742 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:24:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:37,519 INFO L93 Difference]: Finished difference Result 341 states and 864 transitions. [2022-02-10 03:24:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:24:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:24:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:37,520 INFO L225 Difference]: With dead ends: 341 [2022-02-10 03:24:37,520 INFO L226 Difference]: Without dead ends: 335 [2022-02-10 03:24:37,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:24:37,521 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 101 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:37,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 113 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:24:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-02-10 03:24:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 271. [2022-02-10 03:24:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 2.6666666666666665) internal successors, (720), 270 states have internal predecessors, (720), 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 03:24:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 720 transitions. [2022-02-10 03:24:37,524 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 720 transitions. Word has length 20 [2022-02-10 03:24:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 720 transitions. [2022-02-10 03:24:37,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:24:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 720 transitions. [2022-02-10 03:24:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:37,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:37,525 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] [2022-02-10 03:24:37,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-10 03:24:37,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:37,725 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1386325845, now seen corresponding path program 78 times [2022-02-10 03:24:37,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:37,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458928378] [2022-02-10 03:24:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:37,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:37,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:37,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458928378] [2022-02-10 03:24:37,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458928378] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:37,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402657563] [2022-02-10 03:24:37,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:24:37,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:37,977 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:37,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-10 03:24:38,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 03:24:38,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:38,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-10 03:24:38,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:38,199 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 129 treesize of output 109 [2022-02-10 03:24:39,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:39,206 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 172 [2022-02-10 03:24:39,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:39,209 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 144 [2022-02-10 03:24:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:43,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:45,330 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:45,330 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 152 treesize of output 142 [2022-02-10 03:24:46,436 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:46,436 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 175 treesize of output 159 [2022-02-10 03:24:46,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:46,447 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 151 treesize of output 135 [2022-02-10 03:24:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:47,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402657563] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:47,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:47,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:47,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972898793] [2022-02-10 03:24:47,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:47,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:47,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:47,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:47,077 INFO L87 Difference]: Start difference. First operand 271 states and 720 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:49,823 INFO L93 Difference]: Finished difference Result 369 states and 883 transitions. [2022-02-10 03:24:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:24:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:49,824 INFO L225 Difference]: With dead ends: 369 [2022-02-10 03:24:49,824 INFO L226 Difference]: Without dead ends: 354 [2022-02-10 03:24:49,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=220, Invalid=1340, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:24:49,825 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:49,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 222 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:24:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-02-10 03:24:49,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 270. [2022-02-10 03:24:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.6654275092936803) internal successors, (717), 269 states have internal predecessors, (717), 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 03:24:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 717 transitions. [2022-02-10 03:24:49,828 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 717 transitions. Word has length 20 [2022-02-10 03:24:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:49,828 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 717 transitions. [2022-02-10 03:24:49,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 717 transitions. [2022-02-10 03:24:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:49,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:49,829 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] [2022-02-10 03:24:49,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-10 03:24:50,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:50,029 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2041071521, now seen corresponding path program 79 times [2022-02-10 03:24:50,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:50,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525940722] [2022-02-10 03:24:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:50,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:50,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:50,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525940722] [2022-02-10 03:24:50,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525940722] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:50,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351975143] [2022-02-10 03:24:50,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:24:50,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:50,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:50,245 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:50,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-10 03:24:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:50,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:24:50,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:50,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:50,539 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 87 [2022-02-10 03:24:51,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:51,407 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-02-10 03:24:51,409 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 123 treesize of output 105 [2022-02-10 03:24:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:51,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:52,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:52,326 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 103 treesize of output 95 [2022-02-10 03:24:52,984 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:52,984 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 163 treesize of output 151 [2022-02-10 03:24:52,991 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:52,991 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 143 treesize of output 131 [2022-02-10 03:24:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:53,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351975143] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:53,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:53,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:53,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782550427] [2022-02-10 03:24:53,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:53,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:53,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:53,236 INFO L87 Difference]: Start difference. First operand 270 states and 717 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:54,124 INFO L93 Difference]: Finished difference Result 322 states and 818 transitions. [2022-02-10 03:24:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 03:24:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:54,127 INFO L225 Difference]: With dead ends: 322 [2022-02-10 03:24:54,127 INFO L226 Difference]: Without dead ends: 310 [2022-02-10 03:24:54,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:24:54,128 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:54,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 154 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 596 Invalid, 0 Unknown, 230 Unchecked, 0.3s Time] [2022-02-10 03:24:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-02-10 03:24:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 273. [2022-02-10 03:24:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.6654411764705883) internal successors, (725), 272 states have internal predecessors, (725), 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 03:24:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 725 transitions. [2022-02-10 03:24:54,132 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 725 transitions. Word has length 20 [2022-02-10 03:24:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:54,132 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 725 transitions. [2022-02-10 03:24:54,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 725 transitions. [2022-02-10 03:24:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:54,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:54,132 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] [2022-02-10 03:24:54,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-10 03:24:54,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:54,333 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -367111939, now seen corresponding path program 80 times [2022-02-10 03:24:54,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:54,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686772102] [2022-02-10 03:24:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:54,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:54,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:54,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686772102] [2022-02-10 03:24:54,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686772102] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:54,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855888539] [2022-02-10 03:24:54,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:24:54,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:54,587 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:54,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-10 03:24:54,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:24:54,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:54,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:24:54,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:54,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:54,915 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:24:55,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:55,245 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 127 [2022-02-10 03:24:55,248 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 127 treesize of output 109 [2022-02-10 03:24:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:56,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:24:56,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:56,696 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 123 treesize of output 115 [2022-02-10 03:24:57,343 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:57,343 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 167 treesize of output 149 [2022-02-10 03:24:57,351 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:24:57,351 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 141 treesize of output 123 [2022-02-10 03:24:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:57,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855888539] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:24:57,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:24:57,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:24:57,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968500508] [2022-02-10 03:24:57,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:24:57,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:24:57,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:24:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:24:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:24:57,644 INFO L87 Difference]: Start difference. First operand 273 states and 725 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:24:59,104 INFO L93 Difference]: Finished difference Result 339 states and 836 transitions. [2022-02-10 03:24:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 03:24:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:24:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:24:59,105 INFO L225 Difference]: With dead ends: 339 [2022-02-10 03:24:59,105 INFO L226 Difference]: Without dead ends: 327 [2022-02-10 03:24:59,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:24:59,105 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:24:59,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 156 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 667 Invalid, 0 Unknown, 117 Unchecked, 0.3s Time] [2022-02-10 03:24:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-02-10 03:24:59,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 273. [2022-02-10 03:24:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.6654411764705883) internal successors, (725), 272 states have internal predecessors, (725), 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 03:24:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 725 transitions. [2022-02-10 03:24:59,108 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 725 transitions. Word has length 20 [2022-02-10 03:24:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:24:59,108 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 725 transitions. [2022-02-10 03:24:59,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:24:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 725 transitions. [2022-02-10 03:24:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:24:59,109 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:24:59,109 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] [2022-02-10 03:24:59,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-10 03:24:59,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:59,309 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:24:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:24:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -729094049, now seen corresponding path program 81 times [2022-02-10 03:24:59,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:24:59,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264831109] [2022-02-10 03:24:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:24:59,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:24:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:24:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:24:59,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:24:59,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264831109] [2022-02-10 03:24:59,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264831109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:24:59,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677358628] [2022-02-10 03:24:59,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:24:59,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:24:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:24:59,592 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:24:59,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-10 03:24:59,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:24:59,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:24:59,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:24:59,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:24:59,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:24:59,938 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-02-10 03:25:00,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:00,723 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 167 [2022-02-10 03:25:00,725 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 167 treesize of output 143 [2022-02-10 03:25:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:01,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:02,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:02,339 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 120 treesize of output 112 [2022-02-10 03:25:02,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:02,934 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 137 treesize of output 125 [2022-02-10 03:25:02,940 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:02,940 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 117 treesize of output 105 [2022-02-10 03:25:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:03,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677358628] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:03,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:03,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:25:03,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980309956] [2022-02-10 03:25:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:03,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:25:03,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:25:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:25:03,320 INFO L87 Difference]: Start difference. First operand 273 states and 725 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:04,954 INFO L93 Difference]: Finished difference Result 328 states and 830 transitions. [2022-02-10 03:25:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:25:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:25:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:04,955 INFO L225 Difference]: With dead ends: 328 [2022-02-10 03:25:04,955 INFO L226 Difference]: Without dead ends: 314 [2022-02-10 03:25:04,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 03:25:04,955 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:04,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 220 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 779 Invalid, 0 Unknown, 97 Unchecked, 0.4s Time] [2022-02-10 03:25:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-02-10 03:25:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 273. [2022-02-10 03:25:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.6654411764705883) internal successors, (725), 272 states have internal predecessors, (725), 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 03:25:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 725 transitions. [2022-02-10 03:25:04,959 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 725 transitions. Word has length 20 [2022-02-10 03:25:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:04,959 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 725 transitions. [2022-02-10 03:25:04,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 725 transitions. [2022-02-10 03:25:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:04,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:04,959 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] [2022-02-10 03:25:04,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-02-10 03:25:05,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:05,160 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 673123859, now seen corresponding path program 82 times [2022-02-10 03:25:05,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:05,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301925794] [2022-02-10 03:25:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:05,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:05,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:05,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301925794] [2022-02-10 03:25:05,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301925794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:05,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932730610] [2022-02-10 03:25:05,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:25:05,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:05,415 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-10 03:25:05,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:25:05,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:05,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:25:05,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:05,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:05,917 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-02-10 03:25:06,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:06,435 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 168 [2022-02-10 03:25:06,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:06,438 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 146 [2022-02-10 03:25:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:07,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:07,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:07,649 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 107 treesize of output 99 [2022-02-10 03:25:08,011 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:08,012 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 134 treesize of output 124 [2022-02-10 03:25:08,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:08,020 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 116 treesize of output 106 [2022-02-10 03:25:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:08,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932730610] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:08,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:08,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:25:08,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091895581] [2022-02-10 03:25:08,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:08,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:25:08,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:25:08,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:25:08,381 INFO L87 Difference]: Start difference. First operand 273 states and 725 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:08,871 INFO L93 Difference]: Finished difference Result 300 states and 775 transitions. [2022-02-10 03:25:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:25:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:25:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:08,872 INFO L225 Difference]: With dead ends: 300 [2022-02-10 03:25:08,872 INFO L226 Difference]: Without dead ends: 291 [2022-02-10 03:25:08,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:25:08,873 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 42 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:08,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 96 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 369 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-02-10 03:25:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-10 03:25:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 276. [2022-02-10 03:25:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.669090909090909) internal successors, (734), 275 states have internal predecessors, (734), 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 03:25:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 734 transitions. [2022-02-10 03:25:08,876 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 734 transitions. Word has length 20 [2022-02-10 03:25:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:08,876 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 734 transitions. [2022-02-10 03:25:08,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 734 transitions. [2022-02-10 03:25:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:08,876 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:08,876 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] [2022-02-10 03:25:08,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-10 03:25:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-02-10 03:25:09,077 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1795642371, now seen corresponding path program 83 times [2022-02-10 03:25:09,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:09,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744693881] [2022-02-10 03:25:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:09,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:09,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:09,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744693881] [2022-02-10 03:25:09,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744693881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:09,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341095826] [2022-02-10 03:25:09,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:25:09,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:09,282 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:09,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-10 03:25:09,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:25:09,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:09,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:25:09,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:09,532 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 91 treesize of output 77 [2022-02-10 03:25:09,848 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 136 treesize of output 118 [2022-02-10 03:25:09,849 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 118 treesize of output 100 [2022-02-10 03:25:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:10,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:10,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:10,741 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 106 treesize of output 98 [2022-02-10 03:25:10,951 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:10,952 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 94 treesize of output 88 [2022-02-10 03:25:10,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:10,958 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 80 treesize of output 74 [2022-02-10 03:25:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:11,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341095826] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:11,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:11,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:25:11,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914106224] [2022-02-10 03:25:11,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:11,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:25:11,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:25:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:25:11,029 INFO L87 Difference]: Start difference. First operand 276 states and 734 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:25:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:12,015 INFO L93 Difference]: Finished difference Result 308 states and 796 transitions. [2022-02-10 03:25:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:25:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:25:12,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:12,016 INFO L225 Difference]: With dead ends: 308 [2022-02-10 03:25:12,016 INFO L226 Difference]: Without dead ends: 301 [2022-02-10 03:25:12,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:25:12,016 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:12,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 170 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:25:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-02-10 03:25:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 277. [2022-02-10 03:25:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.670289855072464) internal successors, (737), 276 states have internal predecessors, (737), 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 03:25:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 737 transitions. [2022-02-10 03:25:12,019 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 737 transitions. Word has length 20 [2022-02-10 03:25:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:12,019 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 737 transitions. [2022-02-10 03:25:12,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:25:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 737 transitions. [2022-02-10 03:25:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:12,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:12,020 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] [2022-02-10 03:25:12,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-10 03:25:12,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-02-10 03:25:12,220 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2111181557, now seen corresponding path program 84 times [2022-02-10 03:25:12,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:12,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998935956] [2022-02-10 03:25:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:12,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:12,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:12,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998935956] [2022-02-10 03:25:12,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998935956] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:12,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106662080] [2022-02-10 03:25:12,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:25:12,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:12,494 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:12,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-10 03:25:12,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:25:12,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:12,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:25:12,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:12,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:12,682 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:25:14,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:14,502 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 135 [2022-02-10 03:25:14,504 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 135 treesize of output 115 [2022-02-10 03:25:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:15,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:15,975 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:15,976 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 152 treesize of output 140 [2022-02-10 03:25:16,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:16,717 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 158 treesize of output 146 [2022-02-10 03:25:16,724 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:16,724 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 138 treesize of output 126 [2022-02-10 03:25:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:17,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106662080] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:17,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:17,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:25:17,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891026071] [2022-02-10 03:25:17,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:17,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:25:17,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:17,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:25:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:25:17,023 INFO L87 Difference]: Start difference. First operand 277 states and 737 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:17,745 INFO L93 Difference]: Finished difference Result 322 states and 817 transitions. [2022-02-10 03:25:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:25:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:25:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:17,745 INFO L225 Difference]: With dead ends: 322 [2022-02-10 03:25:17,746 INFO L226 Difference]: Without dead ends: 310 [2022-02-10 03:25:17,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 03:25:17,746 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:17,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 127 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 399 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-02-10 03:25:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-02-10 03:25:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 278. [2022-02-10 03:25:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.67870036101083) internal successors, (742), 277 states have internal predecessors, (742), 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 03:25:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2022-02-10 03:25:17,749 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 20 [2022-02-10 03:25:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:17,750 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2022-02-10 03:25:17,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2022-02-10 03:25:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:17,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:17,750 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] [2022-02-10 03:25:17,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-10 03:25:17,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-02-10 03:25:17,951 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:17,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -437221975, now seen corresponding path program 85 times [2022-02-10 03:25:17,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:17,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262966943] [2022-02-10 03:25:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:17,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:18,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:18,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262966943] [2022-02-10 03:25:18,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262966943] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:18,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396063031] [2022-02-10 03:25:18,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:25:18,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:18,258 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:18,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-10 03:25:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:18,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:25:18,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:18,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:18,652 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:25:26,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:26,209 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-02-10 03:25:26,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:26,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 105 [2022-02-10 03:25:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:26,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:27,669 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:27,670 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 169 treesize of output 153 [2022-02-10 03:25:28,221 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:28,221 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 168 treesize of output 150 [2022-02-10 03:25:28,228 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:28,228 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 142 treesize of output 124 [2022-02-10 03:25:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:28,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396063031] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:28,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:28,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:25:28,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330754461] [2022-02-10 03:25:28,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:28,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:25:28,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:25:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:25:28,486 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:29,367 INFO L93 Difference]: Finished difference Result 322 states and 822 transitions. [2022-02-10 03:25:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:25:29,368 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:25:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:29,368 INFO L225 Difference]: With dead ends: 322 [2022-02-10 03:25:29,368 INFO L226 Difference]: Without dead ends: 316 [2022-02-10 03:25:29,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:25:29,369 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 71 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:29,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 124 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 473 Invalid, 0 Unknown, 118 Unchecked, 0.2s Time] [2022-02-10 03:25:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-02-10 03:25:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 279. [2022-02-10 03:25:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.6870503597122304) internal successors, (747), 278 states have internal predecessors, (747), 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 03:25:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 747 transitions. [2022-02-10 03:25:29,374 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 747 transitions. Word has length 20 [2022-02-10 03:25:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:29,374 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 747 transitions. [2022-02-10 03:25:29,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 747 transitions. [2022-02-10 03:25:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:29,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:29,375 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] [2022-02-10 03:25:29,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-10 03:25:29,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-02-10 03:25:29,587 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -799204085, now seen corresponding path program 86 times [2022-02-10 03:25:29,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:29,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703076768] [2022-02-10 03:25:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:29,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:29,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:29,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703076768] [2022-02-10 03:25:29,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703076768] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:29,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235330519] [2022-02-10 03:25:29,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:25:29,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:29,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:29,871 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:29,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-10 03:25:29,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:25:29,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:29,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:25:29,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:30,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:30,054 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:25:31,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:31,101 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 132 [2022-02-10 03:25:31,104 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 132 treesize of output 110 [2022-02-10 03:25:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:31,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:32,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:32,468 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 122 treesize of output 112 [2022-02-10 03:25:33,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:33,462 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 159 treesize of output 147 [2022-02-10 03:25:33,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:33,470 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 139 treesize of output 127 [2022-02-10 03:25:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:33,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235330519] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:33,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:33,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:25:33,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321628708] [2022-02-10 03:25:33,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:25:33,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:25:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:25:33,757 INFO L87 Difference]: Start difference. First operand 279 states and 747 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:35,740 INFO L93 Difference]: Finished difference Result 364 states and 917 transitions. [2022-02-10 03:25:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:25:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:25:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:35,741 INFO L225 Difference]: With dead ends: 364 [2022-02-10 03:25:35,741 INFO L226 Difference]: Without dead ends: 350 [2022-02-10 03:25:35,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=204, Invalid=1518, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:25:35,742 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:35,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 205 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 699 Invalid, 0 Unknown, 137 Unchecked, 0.4s Time] [2022-02-10 03:25:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-02-10 03:25:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 280. [2022-02-10 03:25:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.6881720430107525) internal successors, (750), 279 states have internal predecessors, (750), 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 03:25:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 750 transitions. [2022-02-10 03:25:35,746 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 750 transitions. Word has length 20 [2022-02-10 03:25:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:35,746 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 750 transitions. [2022-02-10 03:25:35,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:25:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 750 transitions. [2022-02-10 03:25:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:35,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:35,746 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] [2022-02-10 03:25:35,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-10 03:25:35,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:35,947 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:35,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash 202665129, now seen corresponding path program 87 times [2022-02-10 03:25:35,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:35,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965556428] [2022-02-10 03:25:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:35,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:36,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:36,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965556428] [2022-02-10 03:25:36,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965556428] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:36,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404948587] [2022-02-10 03:25:36,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:25:36,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:36,241 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:36,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-10 03:25:36,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:25:36,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:25:36,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:36,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:36,627 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 119 [2022-02-10 03:25:46,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:46,537 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-02-10 03:25:46,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:46,540 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 122 [2022-02-10 03:25:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:47,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:48,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:48,066 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 150 treesize of output 138 [2022-02-10 03:25:48,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:48,326 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 136 treesize of output 124 [2022-02-10 03:25:48,331 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:48,331 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 116 treesize of output 104 [2022-02-10 03:25:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:48,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404948587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:48,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:48,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:25:48,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479672634] [2022-02-10 03:25:48,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:48,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:25:48,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:25:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:25:48,613 INFO L87 Difference]: Start difference. First operand 280 states and 750 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:49,190 INFO L93 Difference]: Finished difference Result 303 states and 788 transitions. [2022-02-10 03:25:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 03:25:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:25:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:49,191 INFO L225 Difference]: With dead ends: 303 [2022-02-10 03:25:49,191 INFO L226 Difference]: Without dead ends: 297 [2022-02-10 03:25:49,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2022-02-10 03:25:49,192 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:49,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 133 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2022-02-10 03:25:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-10 03:25:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 282. [2022-02-10 03:25:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.683274021352313) internal successors, (754), 281 states have internal predecessors, (754), 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 03:25:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 754 transitions. [2022-02-10 03:25:49,195 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 754 transitions. Word has length 20 [2022-02-10 03:25:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:49,195 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 754 transitions. [2022-02-10 03:25:49,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 754 transitions. [2022-02-10 03:25:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:49,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:49,195 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] [2022-02-10 03:25:49,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-10 03:25:49,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:49,396 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 737894931, now seen corresponding path program 88 times [2022-02-10 03:25:49,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:49,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194214657] [2022-02-10 03:25:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:49,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:49,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:49,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194214657] [2022-02-10 03:25:49,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194214657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:49,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066828696] [2022-02-10 03:25:49,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:25:49,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:49,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:49,618 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:49,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-10 03:25:49,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:25:49,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:49,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:25:49,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:49,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:49,950 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:25:53,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:53,916 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 159 [2022-02-10 03:25:53,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:25:53,919 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 135 [2022-02-10 03:25:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:55,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:25:55,864 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:55,864 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 139 treesize of output 131 [2022-02-10 03:25:56,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:56,584 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 150 treesize of output 138 [2022-02-10 03:25:56,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:25:56,591 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 130 treesize of output 118 [2022-02-10 03:25:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:56,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066828696] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:25:56,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:25:56,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:25:56,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101649094] [2022-02-10 03:25:56,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:25:56,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:25:56,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:25:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:25:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:25:56,839 INFO L87 Difference]: Start difference. First operand 282 states and 754 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:25:57,423 INFO L93 Difference]: Finished difference Result 313 states and 802 transitions. [2022-02-10 03:25:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 03:25:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:25:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:25:57,424 INFO L225 Difference]: With dead ends: 313 [2022-02-10 03:25:57,424 INFO L226 Difference]: Without dead ends: 307 [2022-02-10 03:25:57,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-02-10 03:25:57,424 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:25:57,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 127 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 411 Invalid, 0 Unknown, 273 Unchecked, 0.2s Time] [2022-02-10 03:25:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-02-10 03:25:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 282. [2022-02-10 03:25:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.683274021352313) internal successors, (754), 281 states have internal predecessors, (754), 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 03:25:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 754 transitions. [2022-02-10 03:25:57,427 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 754 transitions. Word has length 20 [2022-02-10 03:25:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:25:57,428 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 754 transitions. [2022-02-10 03:25:57,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:25:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 754 transitions. [2022-02-10 03:25:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:25:57,428 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:25:57,428 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] [2022-02-10 03:25:57,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-10 03:25:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:57,629 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:25:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:25:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1127532043, now seen corresponding path program 89 times [2022-02-10 03:25:57,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:25:57,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323607219] [2022-02-10 03:25:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:25:57,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:25:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:25:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:25:57,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:25:57,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323607219] [2022-02-10 03:25:57,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323607219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:25:57,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434749312] [2022-02-10 03:25:57,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:25:57,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:25:57,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:25:57,921 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:25:57,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-10 03:25:57,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 03:25:57,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:25:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:25:57,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:25:58,079 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 109 treesize of output 91 [2022-02-10 03:25:59,203 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 153 treesize of output 135 [2022-02-10 03:25:59,206 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 135 treesize of output 117 [2022-02-10 03:26:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:01,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:01,877 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:01,877 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 91 treesize of output 83 [2022-02-10 03:26:02,563 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:02,564 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 131 treesize of output 121 [2022-02-10 03:26:02,571 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:02,571 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 113 treesize of output 103 [2022-02-10 03:26:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:02,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434749312] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:02,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:02,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:26:02,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55114908] [2022-02-10 03:26:02,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:02,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:26:02,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:26:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:26:02,769 INFO L87 Difference]: Start difference. First operand 282 states and 754 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:26:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:04,130 INFO L93 Difference]: Finished difference Result 327 states and 844 transitions. [2022-02-10 03:26:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 03:26:04,130 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:26:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:04,131 INFO L225 Difference]: With dead ends: 327 [2022-02-10 03:26:04,131 INFO L226 Difference]: Without dead ends: 319 [2022-02-10 03:26:04,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 03:26:04,132 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:04,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 133 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 03:26:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-02-10 03:26:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 283. [2022-02-10 03:26:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.6914893617021276) internal successors, (759), 282 states have internal predecessors, (759), 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 03:26:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 759 transitions. [2022-02-10 03:26:04,135 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 759 transitions. Word has length 20 [2022-02-10 03:26:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:04,135 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 759 transitions. [2022-02-10 03:26:04,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:26:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 759 transitions. [2022-02-10 03:26:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:04,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:04,135 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] [2022-02-10 03:26:04,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-10 03:26:04,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:04,336 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1477457773, now seen corresponding path program 90 times [2022-02-10 03:26:04,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:04,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721119624] [2022-02-10 03:26:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:04,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:04,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:04,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721119624] [2022-02-10 03:26:04,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721119624] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:04,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179083604] [2022-02-10 03:26:04,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:26:04,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:04,609 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:04,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-10 03:26:04,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:26:04,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:04,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:26:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:05,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:05,027 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:26:10,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:10,631 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 133 [2022-02-10 03:26:10,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:10,634 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-02-10 03:26:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:11,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:12,427 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:12,427 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 174 treesize of output 160 [2022-02-10 03:26:12,963 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:12,964 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 151 treesize of output 139 [2022-02-10 03:26:12,970 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:12,970 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 131 treesize of output 119 [2022-02-10 03:26:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:13,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179083604] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:13,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:13,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:26:13,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012052317] [2022-02-10 03:26:13,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:13,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:26:13,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:26:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:26:13,214 INFO L87 Difference]: Start difference. First operand 283 states and 759 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:14,832 INFO L93 Difference]: Finished difference Result 336 states and 843 transitions. [2022-02-10 03:26:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:26:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:26:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:14,833 INFO L225 Difference]: With dead ends: 336 [2022-02-10 03:26:14,833 INFO L226 Difference]: Without dead ends: 330 [2022-02-10 03:26:14,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:26:14,833 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 85 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:14,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 397 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2022-02-10 03:26:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-02-10 03:26:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 284. [2022-02-10 03:26:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7031802120141344) internal successors, (765), 283 states have internal predecessors, (765), 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 03:26:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 765 transitions. [2022-02-10 03:26:14,837 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 765 transitions. Word has length 20 [2022-02-10 03:26:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:14,837 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 765 transitions. [2022-02-10 03:26:14,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 765 transitions. [2022-02-10 03:26:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:14,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:14,838 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] [2022-02-10 03:26:14,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-10 03:26:15,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:15,038 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1839439883, now seen corresponding path program 91 times [2022-02-10 03:26:15,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:15,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535658044] [2022-02-10 03:26:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:15,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:15,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:15,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535658044] [2022-02-10 03:26:15,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535658044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:15,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172563900] [2022-02-10 03:26:15,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:26:15,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:15,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:15,301 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:15,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-10 03:26:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:15,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:15,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:15,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:15,664 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:26:17,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:17,672 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 132 [2022-02-10 03:26:17,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:17,676 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 112 [2022-02-10 03:26:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:18,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:19,524 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:19,525 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 107 treesize of output 99 [2022-02-10 03:26:20,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:20,368 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 157 treesize of output 143 [2022-02-10 03:26:20,375 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:20,376 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 135 treesize of output 121 [2022-02-10 03:26:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:20,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172563900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:20,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:20,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:26:20,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366243045] [2022-02-10 03:26:20,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:20,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:26:20,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:26:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:26:20,613 INFO L87 Difference]: Start difference. First operand 284 states and 765 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:22,546 INFO L93 Difference]: Finished difference Result 369 states and 928 transitions. [2022-02-10 03:26:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 03:26:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:26:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:22,547 INFO L225 Difference]: With dead ends: 369 [2022-02-10 03:26:22,547 INFO L226 Difference]: Without dead ends: 362 [2022-02-10 03:26:22,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:26:22,548 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 126 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:22,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 136 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 573 Invalid, 0 Unknown, 121 Unchecked, 0.3s Time] [2022-02-10 03:26:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-02-10 03:26:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 285. [2022-02-10 03:26:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.714788732394366) internal successors, (771), 284 states have internal predecessors, (771), 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 03:26:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 771 transitions. [2022-02-10 03:26:22,552 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 771 transitions. Word has length 20 [2022-02-10 03:26:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:22,552 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 771 transitions. [2022-02-10 03:26:22,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 771 transitions. [2022-02-10 03:26:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:22,552 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:22,552 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] [2022-02-10 03:26:22,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-10 03:26:22,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:22,753 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1091034421, now seen corresponding path program 92 times [2022-02-10 03:26:22,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:22,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951784173] [2022-02-10 03:26:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:22,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:23,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:23,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951784173] [2022-02-10 03:26:23,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951784173] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:23,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015846452] [2022-02-10 03:26:23,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:26:23,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:23,256 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:23,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-10 03:26:23,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:26:23,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:23,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:23,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:23,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:23,451 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:26:24,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:24,289 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-02-10 03:26:24,292 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 154 treesize of output 132 [2022-02-10 03:26:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:26,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:27,545 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:27,545 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 122 treesize of output 112 [2022-02-10 03:26:29,037 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:29,037 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 162 treesize of output 148 [2022-02-10 03:26:29,043 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:29,044 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 140 treesize of output 126 [2022-02-10 03:26:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:29,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015846452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:29,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:29,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:26:29,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115267052] [2022-02-10 03:26:29,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:29,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:26:29,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:26:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:26:29,263 INFO L87 Difference]: Start difference. First operand 285 states and 771 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:26:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:32,478 INFO L93 Difference]: Finished difference Result 396 states and 969 transitions. [2022-02-10 03:26:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 03:26:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:26:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:32,479 INFO L225 Difference]: With dead ends: 396 [2022-02-10 03:26:32,479 INFO L226 Difference]: Without dead ends: 384 [2022-02-10 03:26:32,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=210, Invalid=1350, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 03:26:32,479 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 188 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:32,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 151 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 697 Invalid, 0 Unknown, 85 Unchecked, 0.4s Time] [2022-02-10 03:26:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-02-10 03:26:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 283. [2022-02-10 03:26:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 2.6914893617021276) internal successors, (759), 282 states have internal predecessors, (759), 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 03:26:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 759 transitions. [2022-02-10 03:26:32,483 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 759 transitions. Word has length 20 [2022-02-10 03:26:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:32,483 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 759 transitions. [2022-02-10 03:26:32,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:26:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 759 transitions. [2022-02-10 03:26:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:32,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:32,483 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] [2022-02-10 03:26:32,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-10 03:26:32,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:32,684 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -774392553, now seen corresponding path program 93 times [2022-02-10 03:26:32,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:32,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462932331] [2022-02-10 03:26:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:32,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:32,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:32,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462932331] [2022-02-10 03:26:32,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462932331] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:32,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80549050] [2022-02-10 03:26:33,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:26:33,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:33,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:33,001 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:33,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-10 03:26:33,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 03:26:33,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:33,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:33,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:33,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:33,303 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 95 [2022-02-10 03:26:35,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:35,022 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 134 [2022-02-10 03:26:35,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:35,027 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 114 [2022-02-10 03:26:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:36,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:37,597 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:37,598 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 106 treesize of output 98 [2022-02-10 03:26:38,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:38,291 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 148 treesize of output 136 [2022-02-10 03:26:38,298 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:38,298 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 128 treesize of output 116 [2022-02-10 03:26:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:38,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80549050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:38,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:38,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:26:38,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103012670] [2022-02-10 03:26:38,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:38,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:26:38,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:26:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:26:38,549 INFO L87 Difference]: Start difference. First operand 283 states and 759 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:41,744 INFO L93 Difference]: Finished difference Result 395 states and 955 transitions. [2022-02-10 03:26:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 03:26:41,744 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:26:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:41,745 INFO L225 Difference]: With dead ends: 395 [2022-02-10 03:26:41,745 INFO L226 Difference]: Without dead ends: 368 [2022-02-10 03:26:41,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2022-02-10 03:26:41,745 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 175 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:41,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 128 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 512 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-02-10 03:26:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-02-10 03:26:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 284. [2022-02-10 03:26:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7031802120141344) internal successors, (765), 283 states have internal predecessors, (765), 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 03:26:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 765 transitions. [2022-02-10 03:26:41,748 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 765 transitions. Word has length 20 [2022-02-10 03:26:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:41,749 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 765 transitions. [2022-02-10 03:26:41,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 765 transitions. [2022-02-10 03:26:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:41,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:41,749 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] [2022-02-10 03:26:41,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-02-10 03:26:41,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-02-10 03:26:41,950 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 889063925, now seen corresponding path program 94 times [2022-02-10 03:26:41,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:41,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002816221] [2022-02-10 03:26:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:41,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:42,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:42,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002816221] [2022-02-10 03:26:42,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002816221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:42,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130376097] [2022-02-10 03:26:42,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:26:42,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:42,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:42,250 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:42,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-10 03:26:42,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:26:42,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:42,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-10 03:26:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:42,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:42,434 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 101 [2022-02-10 03:26:43,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:43,038 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 132 [2022-02-10 03:26:43,041 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 132 treesize of output 110 [2022-02-10 03:26:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:44,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:45,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:45,602 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 133 treesize of output 125 [2022-02-10 03:26:46,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:46,159 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 144 treesize of output 132 [2022-02-10 03:26:46,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:46,167 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 124 treesize of output 112 [2022-02-10 03:26:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:46,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130376097] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:46,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:46,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:26:46,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088480179] [2022-02-10 03:26:46,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:46,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:26:46,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:26:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:26:46,440 INFO L87 Difference]: Start difference. First operand 284 states and 765 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:26:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:48,591 INFO L93 Difference]: Finished difference Result 410 states and 983 transitions. [2022-02-10 03:26:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 03:26:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:26:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:48,592 INFO L225 Difference]: With dead ends: 410 [2022-02-10 03:26:48,592 INFO L226 Difference]: Without dead ends: 379 [2022-02-10 03:26:48,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=1495, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 03:26:48,592 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 138 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:48,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 247 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 904 Invalid, 0 Unknown, 57 Unchecked, 0.5s Time] [2022-02-10 03:26:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-02-10 03:26:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 286. [2022-02-10 03:26:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.7263157894736842) internal successors, (777), 285 states have internal predecessors, (777), 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 03:26:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 777 transitions. [2022-02-10 03:26:48,596 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 777 transitions. Word has length 20 [2022-02-10 03:26:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 777 transitions. [2022-02-10 03:26:48,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:26:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 777 transitions. [2022-02-10 03:26:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:48,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:48,596 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] [2022-02-10 03:26:48,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-10 03:26:48,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-02-10 03:26:48,797 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1509414807, now seen corresponding path program 95 times [2022-02-10 03:26:48,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:48,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877342247] [2022-02-10 03:26:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:48,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:49,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:49,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877342247] [2022-02-10 03:26:49,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877342247] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:49,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894265529] [2022-02-10 03:26:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 03:26:49,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:49,110 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:49,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-10 03:26:49,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:26:49,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:49,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:49,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:49,313 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 109 treesize of output 91 [2022-02-10 03:26:49,771 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 150 treesize of output 130 [2022-02-10 03:26:49,773 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 130 treesize of output 110 [2022-02-10 03:26:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:50,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:51,022 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:51,022 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 117 treesize of output 107 [2022-02-10 03:26:51,384 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:51,384 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 112 treesize of output 104 [2022-02-10 03:26:51,389 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:51,389 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 96 treesize of output 88 [2022-02-10 03:26:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:51,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894265529] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:51,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:51,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-10 03:26:51,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809621407] [2022-02-10 03:26:51,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:51,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 03:26:51,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 03:26:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-02-10 03:26:51,488 INFO L87 Difference]: Start difference. First operand 286 states and 777 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:26:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:53,679 INFO L93 Difference]: Finished difference Result 405 states and 997 transitions. [2022-02-10 03:26:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 03:26:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 20 [2022-02-10 03:26:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:53,680 INFO L225 Difference]: With dead ends: 405 [2022-02-10 03:26:53,680 INFO L226 Difference]: Without dead ends: 373 [2022-02-10 03:26:53,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2022-02-10 03:26:53,681 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 140 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:53,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 238 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:26:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-02-10 03:26:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 291. [2022-02-10 03:26:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.7517241379310344) internal successors, (798), 290 states have internal predecessors, (798), 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 03:26:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 798 transitions. [2022-02-10 03:26:53,684 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 798 transitions. Word has length 20 [2022-02-10 03:26:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:53,684 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 798 transitions. [2022-02-10 03:26:53,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 03:26:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 798 transitions. [2022-02-10 03:26:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:53,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:53,685 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] [2022-02-10 03:26:53,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-10 03:26:53,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:53,887 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 705080893, now seen corresponding path program 96 times [2022-02-10 03:26:53,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:53,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981665545] [2022-02-10 03:26:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:53,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:54,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:54,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981665545] [2022-02-10 03:26:54,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981665545] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:54,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117653870] [2022-02-10 03:26:54,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 03:26:54,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:54,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:54,113 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:54,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-10 03:26:54,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 03:26:54,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:26:54,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:54,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:26:54,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:54,397 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-02-10 03:26:55,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:55,063 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 146 [2022-02-10 03:26:55,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:26:55,067 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-02-10 03:26:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:56,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:26:56,859 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:56,860 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 125 treesize of output 117 [2022-02-10 03:26:57,535 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:57,535 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 160 treesize of output 148 [2022-02-10 03:26:57,542 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:26:57,542 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 140 treesize of output 128 [2022-02-10 03:26:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:57,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117653870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:26:57,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:26:57,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 03:26:57,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847948921] [2022-02-10 03:26:57,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:26:57,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 03:26:57,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:26:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 03:26:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-02-10 03:26:57,770 INFO L87 Difference]: Start difference. First operand 291 states and 798 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:26:59,310 INFO L93 Difference]: Finished difference Result 362 states and 926 transitions. [2022-02-10 03:26:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 03:26:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 20 [2022-02-10 03:26:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:26:59,311 INFO L225 Difference]: With dead ends: 362 [2022-02-10 03:26:59,311 INFO L226 Difference]: Without dead ends: 356 [2022-02-10 03:26:59,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 03:26:59,312 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 113 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 03:26:59,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 153 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 635 Invalid, 0 Unknown, 149 Unchecked, 0.3s Time] [2022-02-10 03:26:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-02-10 03:26:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 292. [2022-02-10 03:26:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.7628865979381443) internal successors, (804), 291 states have internal predecessors, (804), 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 03:26:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 804 transitions. [2022-02-10 03:26:59,316 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 804 transitions. Word has length 20 [2022-02-10 03:26:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:26:59,316 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 804 transitions. [2022-02-10 03:26:59,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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 03:26:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 804 transitions. [2022-02-10 03:26:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:26:59,317 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:26:59,317 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] [2022-02-10 03:26:59,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-10 03:26:59,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:59,523 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:26:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:26:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 343098783, now seen corresponding path program 97 times [2022-02-10 03:26:59,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:26:59,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859820063] [2022-02-10 03:26:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:26:59,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:26:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:26:59,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:26:59,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859820063] [2022-02-10 03:26:59,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859820063] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:26:59,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696060580] [2022-02-10 03:26:59,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 03:26:59,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:26:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:26:59,860 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:26:59,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-10 03:26:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:26:59,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:26:59,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:00,089 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 109 treesize of output 91 [2022-02-10 03:27:00,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:00,674 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-02-10 03:27:00,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:00,678 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-02-10 03:27:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:02,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:03,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:03,008 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 125 treesize of output 117 [2022-02-10 03:27:03,688 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:03,688 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 157 treesize of output 143 [2022-02-10 03:27:03,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:03,696 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 135 treesize of output 121 [2022-02-10 03:27:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:03,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696060580] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:03,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:03,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:27:03,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711746243] [2022-02-10 03:27:03,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:03,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:27:03,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:27:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:27:03,952 INFO L87 Difference]: Start difference. First operand 292 states and 804 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:07,137 INFO L93 Difference]: Finished difference Result 497 states and 1150 transitions. [2022-02-10 03:27:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 03:27:07,137 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:27:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:07,138 INFO L225 Difference]: With dead ends: 497 [2022-02-10 03:27:07,138 INFO L226 Difference]: Without dead ends: 469 [2022-02-10 03:27:07,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 03:27:07,139 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 173 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:07,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 256 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 03:27:07,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-10 03:27:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 293. [2022-02-10 03:27:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.7842465753424657) internal successors, (813), 292 states have internal predecessors, (813), 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 03:27:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 813 transitions. [2022-02-10 03:27:07,143 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 813 transitions. Word has length 20 [2022-02-10 03:27:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 813 transitions. [2022-02-10 03:27:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 813 transitions. [2022-02-10 03:27:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:27:07,143 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:07,143 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] [2022-02-10 03:27:07,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-10 03:27:07,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable192 [2022-02-10 03:27:07,345 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:27:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1021394209, now seen corresponding path program 98 times [2022-02-10 03:27:07,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:07,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826054056] [2022-02-10 03:27:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:07,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:07,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:07,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826054056] [2022-02-10 03:27:07,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826054056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:07,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252744982] [2022-02-10 03:27:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 03:27:07,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:07,617 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:07,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-10 03:27:07,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 03:27:07,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:07,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:27:07,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:07,840 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 121 treesize of output 103 [2022-02-10 03:27:08,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:08,205 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 182 [2022-02-10 03:27:08,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:08,208 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 154 [2022-02-10 03:27:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:09,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:09,932 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:09,932 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 126 treesize of output 118 [2022-02-10 03:27:10,371 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:10,371 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 135 treesize of output 123 [2022-02-10 03:27:10,377 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:10,377 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 115 treesize of output 103 [2022-02-10 03:27:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:10,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252744982] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:10,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:10,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:27:10,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133617073] [2022-02-10 03:27:10,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:10,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:27:10,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:27:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:27:10,663 INFO L87 Difference]: Start difference. First operand 293 states and 813 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:12,659 INFO L93 Difference]: Finished difference Result 385 states and 965 transitions. [2022-02-10 03:27:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 03:27:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:27:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:12,660 INFO L225 Difference]: With dead ends: 385 [2022-02-10 03:27:12,660 INFO L226 Difference]: Without dead ends: 373 [2022-02-10 03:27:12,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2022-02-10 03:27:12,660 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:12,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 200 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 03:27:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-02-10 03:27:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 290. [2022-02-10 03:27:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.754325259515571) internal successors, (796), 289 states have internal predecessors, (796), 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 03:27:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 796 transitions. [2022-02-10 03:27:12,663 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 796 transitions. Word has length 20 [2022-02-10 03:27:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:12,664 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 796 transitions. [2022-02-10 03:27:12,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 796 transitions. [2022-02-10 03:27:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:27:12,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:12,664 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] [2022-02-10 03:27:12,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-10 03:27:12,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2022-02-10 03:27:12,865 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:27:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1408146113, now seen corresponding path program 99 times [2022-02-10 03:27:12,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:12,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244357553] [2022-02-10 03:27:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:12,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:13,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:13,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244357553] [2022-02-10 03:27:13,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244357553] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:13,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858098152] [2022-02-10 03:27:13,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 03:27:13,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:13,111 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:13,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-10 03:27:13,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 03:27:13,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:13,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 03:27:13,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:13,281 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 109 treesize of output 91 [2022-02-10 03:27:13,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:13,727 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 145 [2022-02-10 03:27:13,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:13,730 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-02-10 03:27:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:15,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 03:27:16,138 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:16,138 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 129 treesize of output 121 [2022-02-10 03:27:16,910 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:16,910 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 159 treesize of output 147 [2022-02-10 03:27:16,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-10 03:27:16,917 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 139 treesize of output 127 [2022-02-10 03:27:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:17,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858098152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 03:27:17,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 03:27:17,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 03:27:17,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052562744] [2022-02-10 03:27:17,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 03:27:17,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 03:27:17,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 03:27:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 03:27:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-02-10 03:27:17,167 INFO L87 Difference]: Start difference. First operand 290 states and 796 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 03:27:19,947 INFO L93 Difference]: Finished difference Result 441 states and 1063 transitions. [2022-02-10 03:27:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-10 03:27:19,947 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20 [2022-02-10 03:27:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 03:27:19,948 INFO L225 Difference]: With dead ends: 441 [2022-02-10 03:27:19,948 INFO L226 Difference]: Without dead ends: 417 [2022-02-10 03:27:19,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=255, Invalid=1725, Unknown=0, NotChecked=0, Total=1980 [2022-02-10 03:27:19,948 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 167 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 03:27:19,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 243 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 03:27:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-10 03:27:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 290. [2022-02-10 03:27:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.764705882352941) internal successors, (799), 289 states have internal predecessors, (799), 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 03:27:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 799 transitions. [2022-02-10 03:27:19,952 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 799 transitions. Word has length 20 [2022-02-10 03:27:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 03:27:19,952 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 799 transitions. [2022-02-10 03:27:19,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 03:27:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 799 transitions. [2022-02-10 03:27:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-10 03:27:19,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 03:27:19,953 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] [2022-02-10 03:27:19,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-10 03:27:20,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:20,153 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 03:27:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 03:27:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -660792335, now seen corresponding path program 100 times [2022-02-10 03:27:20,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 03:27:20,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714997854] [2022-02-10 03:27:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 03:27:20,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 03:27:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 03:27:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 03:27:20,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 03:27:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714997854] [2022-02-10 03:27:20,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714997854] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 03:27:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343649669] [2022-02-10 03:27:20,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 03:27:20,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 03:27:20,414 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 03:27:20,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-10 03:27:20,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 03:27:20,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 03:27:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 03:27:20,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 03:27:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-10 03:27:20,613 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 Received shutdown request... [2022-02-10 03:27:22,965 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-10 03:27:22,968 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-10 03:27:22,969 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 03:27:22,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-10 03:27:22,991 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 03:27:23,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 03:27:23,175 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. [2022-02-10 03:27:23,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-10 03:27:23,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-10 03:27:23,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-10 03:27:23,179 INFO L732 BasicCegarLoop]: Path program histogram: [100, 36, 9, 9, 7, 6, 6, 6, 6, 4, 2, 2, 1, 1, 1] [2022-02-10 03:27:23,181 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 03:27:23,181 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 03:27:23,184 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 03:27:23 BasicIcfg [2022-02-10 03:27:23,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 03:27:23,184 INFO L158 Benchmark]: Toolchain (without parser) took 721681.99ms. Allocated memory was 168.8MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 128.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-02-10 03:27:23,184 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 168.8MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:27:23,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.97ms. Allocated memory is still 168.8MB. Free memory was 127.9MB in the beginning and 126.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 03:27:23,184 INFO L158 Benchmark]: Boogie Preprocessor took 16.67ms. Allocated memory is still 168.8MB. Free memory was 126.4MB in the beginning and 125.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 03:27:23,184 INFO L158 Benchmark]: RCFGBuilder took 413.81ms. Allocated memory is still 168.8MB. Free memory was 125.2MB in the beginning and 112.5MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-10 03:27:23,184 INFO L158 Benchmark]: TraceAbstraction took 721216.55ms. Allocated memory was 168.8MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 112.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-02-10 03:27:23,185 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 0.13ms. Allocated memory is still 168.8MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.97ms. Allocated memory is still 168.8MB. Free memory was 127.9MB in the beginning and 126.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.67ms. Allocated memory is still 168.8MB. Free memory was 126.4MB in the beginning and 125.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 413.81ms. Allocated memory is still 168.8MB. Free memory was 125.2MB in the beginning and 112.5MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 721216.55ms. Allocated memory was 168.8MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 112.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.3GB. 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: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 122]: 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 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 121]: 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 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 118]: 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 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 721.1s, OverallIterations: 196, TraceHistogramMax: 1, PathProgramHistogramMax: 100, EmptinessCheckTime: 1.5s, AutomataDifference: 176.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, PartialOrderReductionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16085 SdHoareTripleChecker+Valid, 39.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16085 mSDsluCounter, 22694 SdHoareTripleChecker+Invalid, 32.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9227 IncrementalHoareTripleChecker+Unchecked, 43737 mSDsCounter, 4095 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78102 IncrementalHoareTripleChecker+Invalid, 91424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4095 mSolverCounterUnsat, 2018 mSDtfsCounter, 78102 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7909 GetRequests, 3207 SyntacticMatches, 245 SemanticMatches, 4457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20027 ImplicationChecksByTransitivity, 200.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97401occurred in iteration=0, InterpolantAutomatonStates: 2322, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 195 MinimizatonAttempts, 52583 StatesRemovedByMinimization, 194 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 503.6s InterpolantComputationTime, 6049 NumberOfCodeBlocks, 6049 NumberOfCodeBlocksAsserted, 429 NumberOfCheckSat, 8070 ConstructedInterpolants, 283 QuantifiedInterpolants, 180325 SizeOfPredicates, 2517 NumberOfNonLiveVariables, 9790 ConjunctsInSsa, 2528 ConjunctsInUnsatCore, 447 InterpolantComputations, 83 PerfectInterpolantSequences, 22/980 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