/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 03:51:31,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 03:51:31,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 03:51:31,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 03:51:31,777 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-FA-NoLbe.epf [2022-02-09 03:51:31,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 03:51:31,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 03:51:31,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 03:51:31,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 03:51:31,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 03:51:31,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 03:51:31,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 03:51:31,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 03:51:31,805 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 03:51:31,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 03:51:31,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 03:51:31,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 03:51:31,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 03:51:31,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 03:51:31,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 03:51:31,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 03:51:31,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 03:51:31,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 03:51:31,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 03:51:31,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 03:51:31,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 03:51:31,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 03:51:31,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 03:51:31,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 03:51:32,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 03:51:32,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 03:51:32,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 03:51:32,021 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 03:51:32,021 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 03:51:32,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl [2022-02-09 03:51:32,023 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl' [2022-02-09 03:51:32,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 03:51:32,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 03:51:32,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 03:51:32,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 03:51:32,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 03:51:32,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,072 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 03:51:32,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 03:51:32,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 03:51:32,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 03:51:32,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 03:51:32,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 03:51:32,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 03:51:32,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 03:51:32,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 03:51:32,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/1) ... [2022-02-09 03:51:32,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 03:51:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:32,128 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) [2022-02-09 03:51:32,148 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 [2022-02-09 03:51:32,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 03:51:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 03:51:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 03:51:32,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-09 03:51:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 03:51:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 03:51:32,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 03:51:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 03:51:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 03:51:32,159 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-09 03:51:32,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-09 03:51:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-09 03:51:32,159 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 03:51:32,204 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 03:51:32,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 03:51:32,282 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 03:51:32,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 03:51:32,296 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 03:51:32,298 INFO L202 PluginConnector]: Adding new model queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 03:51:32 BoogieIcfgContainer [2022-02-09 03:51:32,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 03:51:32,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 03:51:32,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 03:51:32,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 03:51:32,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:51:32" (1/2) ... [2022-02-09 03:51:32,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405a7110 and model type queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 03:51:32, skipping insertion in model container [2022-02-09 03:51:32,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 03:51:32" (2/2) ... [2022-02-09 03:51:32,326 INFO L111 eAbstractionObserver]: Analyzing ICFG queue-add-3-nl.wvr.bpl [2022-02-09 03:51:32,329 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 03:51:32,329 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 03:51:32,330 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 03:51:32,330 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 03:51:32,388 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-09 03:51:32,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 03:51:32,428 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 [2022-02-09 03:51:32,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-09 03:51:32,440 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 42 transitions, 108 flow [2022-02-09 03:51:32,551 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-09 03:51:32,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:32,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:32,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1996667167, now seen corresponding path program 1 times [2022-02-09 03:51:32,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:32,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887081716] [2022-02-09 03:51:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:32,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:32,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:32,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887081716] [2022-02-09 03:51:32,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887081716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:51:32,710 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:51:32,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 03:51:32,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657907846] [2022-02-09 03:51:32,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:51:32,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 03:51:32,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 03:51:32,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:32,753 INFO L87 Difference]: Start difference. First operand has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:32,829 INFO L93 Difference]: Finished difference Result 1112 states and 3308 transitions. [2022-02-09 03:51:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 03:51:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-02-09 03:51:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:32,849 INFO L225 Difference]: With dead ends: 1112 [2022-02-09 03:51:32,850 INFO L226 Difference]: Without dead ends: 1112 [2022-02-09 03:51:32,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:32,854 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:32,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 60 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:51:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-02-09 03:51:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2022-02-09 03:51:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 2.9774977497749773) internal successors, (3308), 1111 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 3308 transitions. [2022-02-09 03:51:32,962 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 3308 transitions. Word has length 22 [2022-02-09 03:51:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:32,962 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 3308 transitions. [2022-02-09 03:51:32,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 3308 transitions. [2022-02-09 03:51:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-09 03:51:32,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:32,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:32,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 03:51:32,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1213084767, now seen corresponding path program 1 times [2022-02-09 03:51:32,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:32,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197417065] [2022-02-09 03:51:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:32,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:32,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:32,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197417065] [2022-02-09 03:51:33,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197417065] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:51:33,000 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:51:33,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 03:51:33,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387185817] [2022-02-09 03:51:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:51:33,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 03:51:33,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 03:51:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:33,002 INFO L87 Difference]: Start difference. First operand 1112 states and 3308 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2022-02-09 03:51:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:33,031 INFO L93 Difference]: Finished difference Result 1165 states and 3465 transitions. [2022-02-09 03:51:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 03:51:33,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 28 [2022-02-09 03:51:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:33,037 INFO L225 Difference]: With dead ends: 1165 [2022-02-09 03:51:33,038 INFO L226 Difference]: Without dead ends: 1165 [2022-02-09 03:51:33,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:33,039 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:33,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:51:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-02-09 03:51:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-02-09 03:51:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 2.9768041237113403) internal successors, (3465), 1164 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 3465 transitions. [2022-02-09 03:51:33,078 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 3465 transitions. Word has length 28 [2022-02-09 03:51:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:33,078 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 3465 transitions. [2022-02-09 03:51:33,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2022-02-09 03:51:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 3465 transitions. [2022-02-09 03:51:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-09 03:51:33,081 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:33,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:33,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 03:51:33,083 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -989860967, now seen corresponding path program 2 times [2022-02-09 03:51:33,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:33,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095627434] [2022-02-09 03:51:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:33,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 03:51:33,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:33,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095627434] [2022-02-09 03:51:33,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095627434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:51:33,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:51:33,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 03:51:33,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403666623] [2022-02-09 03:51:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:51:33,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 03:51:33,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 03:51:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:33,123 INFO L87 Difference]: Start difference. First operand 1165 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2022-02-09 03:51:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:33,171 INFO L93 Difference]: Finished difference Result 1281 states and 3812 transitions. [2022-02-09 03:51:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 03:51:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 28 [2022-02-09 03:51:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:33,176 INFO L225 Difference]: With dead ends: 1281 [2022-02-09 03:51:33,176 INFO L226 Difference]: Without dead ends: 1281 [2022-02-09 03:51:33,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:51:33,182 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 60 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:51:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-02-09 03:51:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2022-02-09 03:51:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.978125) internal successors, (3812), 1280 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 3812 transitions. [2022-02-09 03:51:33,217 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 3812 transitions. Word has length 28 [2022-02-09 03:51:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:33,218 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 3812 transitions. [2022-02-09 03:51:33,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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) [2022-02-09 03:51:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 3812 transitions. [2022-02-09 03:51:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:33,221 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:33,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 03:51:33,222 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 416907713, now seen corresponding path program 1 times [2022-02-09 03:51:33,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:33,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266598434] [2022-02-09 03:51:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:33,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:33,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:33,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266598434] [2022-02-09 03:51:33,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266598434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:33,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071538376] [2022-02-09 03:51:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:33,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:33,722 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) [2022-02-09 03:51:33,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-09 03:51:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:33,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:33,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:34,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:34,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071538376] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:34,771 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:34,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:51:34,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937394092] [2022-02-09 03:51:34,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:34,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:51:34,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:51:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:51:34,775 INFO L87 Difference]: Start difference. First operand 1281 states and 3812 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:35,760 INFO L93 Difference]: Finished difference Result 2613 states and 7587 transitions. [2022-02-09 03:51:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:51:35,760 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 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 33 [2022-02-09 03:51:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:35,771 INFO L225 Difference]: With dead ends: 2613 [2022-02-09 03:51:35,771 INFO L226 Difference]: Without dead ends: 2598 [2022-02-09 03:51:35,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:51:35,772 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 384 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:35,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1142 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:51:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2022-02-09 03:51:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1446. [2022-02-09 03:51:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9577854671280277) internal successors, (4274), 1445 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4274 transitions. [2022-02-09 03:51:35,808 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4274 transitions. Word has length 33 [2022-02-09 03:51:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:35,808 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 4274 transitions. [2022-02-09 03:51:35,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4274 transitions. [2022-02-09 03:51:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:35,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:35,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:35,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:36,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:36,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -351824383, now seen corresponding path program 2 times [2022-02-09 03:51:36,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:36,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929899987] [2022-02-09 03:51:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:36,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:36,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:36,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929899987] [2022-02-09 03:51:36,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929899987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:36,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785720057] [2022-02-09 03:51:36,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:51:36,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:36,331 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) [2022-02-09 03:51:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 03:51:36,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:51:36,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:36,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:51:36,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:36,633 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 5 treesize of output 3 [2022-02-09 03:51:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:36,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:37,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785720057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:37,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:37,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-09 03:51:37,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674820981] [2022-02-09 03:51:37,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:37,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:51:37,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:51:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:51:37,345 INFO L87 Difference]: Start difference. First operand 1446 states and 4274 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:38,534 INFO L93 Difference]: Finished difference Result 2643 states and 7655 transitions. [2022-02-09 03:51:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:51:38,535 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:38,544 INFO L225 Difference]: With dead ends: 2643 [2022-02-09 03:51:38,544 INFO L226 Difference]: Without dead ends: 2624 [2022-02-09 03:51:38,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 03:51:38,545 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 317 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:38,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1369 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:51:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2022-02-09 03:51:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1460. [2022-02-09 03:51:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 2.9588759424263196) internal successors, (4317), 1459 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 4317 transitions. [2022-02-09 03:51:38,584 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 4317 transitions. Word has length 33 [2022-02-09 03:51:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:38,585 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 4317 transitions. [2022-02-09 03:51:38,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 4317 transitions. [2022-02-09 03:51:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:38,590 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:38,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:38,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:38,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:38,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 524358081, now seen corresponding path program 3 times [2022-02-09 03:51:38,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:38,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180332112] [2022-02-09 03:51:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:38,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:39,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:39,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180332112] [2022-02-09 03:51:39,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180332112] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:39,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063651451] [2022-02-09 03:51:39,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:51:39,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:39,062 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) [2022-02-09 03:51:39,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-09 03:51:39,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:51:39,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:39,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:51:39,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:39,326 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 5 treesize of output 3 [2022-02-09 03:51:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:39,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:40,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063651451] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:40,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:40,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-09 03:51:40,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463595413] [2022-02-09 03:51:40,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:40,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:51:40,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:51:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:51:40,091 INFO L87 Difference]: Start difference. First operand 1460 states and 4317 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:41,394 INFO L93 Difference]: Finished difference Result 2351 states and 6762 transitions. [2022-02-09 03:51:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:51:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:41,403 INFO L225 Difference]: With dead ends: 2351 [2022-02-09 03:51:41,404 INFO L226 Difference]: Without dead ends: 2336 [2022-02-09 03:51:41,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:51:41,406 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 346 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:41,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1306 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:51:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-02-09 03:51:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1458. [2022-02-09 03:51:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 2.959505833905285) internal successors, (4312), 1457 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4312 transitions. [2022-02-09 03:51:41,456 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4312 transitions. Word has length 33 [2022-02-09 03:51:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:41,457 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 4312 transitions. [2022-02-09 03:51:41,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4312 transitions. [2022-02-09 03:51:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:41,461 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:41,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:41,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:41,694 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash -210109243, now seen corresponding path program 4 times [2022-02-09 03:51:41,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:41,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873571917] [2022-02-09 03:51:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:41,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:41,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:41,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873571917] [2022-02-09 03:51:41,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873571917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:41,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581520930] [2022-02-09 03:51:41,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:51:41,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:41,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:41,955 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) [2022-02-09 03:51:41,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 03:51:41,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:51:41,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:41,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:41,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:42,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:42,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581520930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:42,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:42,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:51:42,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654630726] [2022-02-09 03:51:42,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:42,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:51:42,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:51:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:51:42,838 INFO L87 Difference]: Start difference. First operand 1458 states and 4312 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:43,992 INFO L93 Difference]: Finished difference Result 2937 states and 8459 transitions. [2022-02-09 03:51:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-09 03:51:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:51:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:44,003 INFO L225 Difference]: With dead ends: 2937 [2022-02-09 03:51:44,003 INFO L226 Difference]: Without dead ends: 2922 [2022-02-09 03:51:44,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 03:51:44,004 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 456 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:44,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1398 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:51:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-02-09 03:51:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1477. [2022-02-09 03:51:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 2.959349593495935) internal successors, (4368), 1476 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4368 transitions. [2022-02-09 03:51:44,037 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4368 transitions. Word has length 33 [2022-02-09 03:51:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:44,037 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 4368 transitions. [2022-02-09 03:51:44,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4368 transitions. [2022-02-09 03:51:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:44,040 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:44,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:44,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:44,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:44,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1493256703, now seen corresponding path program 5 times [2022-02-09 03:51:44,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:44,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647809466] [2022-02-09 03:51:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:44,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:44,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:44,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647809466] [2022-02-09 03:51:44,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647809466] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:44,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950991606] [2022-02-09 03:51:44,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:51:44,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:44,479 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) [2022-02-09 03:51:44,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 03:51:44,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:51:44,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:44,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:44,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:44,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:45,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950991606] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:45,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:45,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:51:45,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520365708] [2022-02-09 03:51:45,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:45,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:51:45,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:51:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:51:45,312 INFO L87 Difference]: Start difference. First operand 1477 states and 4368 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:46,410 INFO L93 Difference]: Finished difference Result 3196 states and 9103 transitions. [2022-02-09 03:51:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-09 03:51:46,410 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:51:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:46,421 INFO L225 Difference]: With dead ends: 3196 [2022-02-09 03:51:46,422 INFO L226 Difference]: Without dead ends: 3181 [2022-02-09 03:51:46,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:51:46,423 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 471 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:46,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1318 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:51:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-02-09 03:51:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1477. [2022-02-09 03:51:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 2.959349593495935) internal successors, (4368), 1476 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4368 transitions. [2022-02-09 03:51:46,454 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4368 transitions. Word has length 33 [2022-02-09 03:51:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:46,454 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 4368 transitions. [2022-02-09 03:51:46,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4368 transitions. [2022-02-09 03:51:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:46,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:46,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:46,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:46,671 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1209675547, now seen corresponding path program 6 times [2022-02-09 03:51:46,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:46,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824442576] [2022-02-09 03:51:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:46,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:46,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:46,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824442576] [2022-02-09 03:51:46,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824442576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:46,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133803045] [2022-02-09 03:51:46,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:51:46,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:46,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:46,895 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) [2022-02-09 03:51:46,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-09 03:51:46,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:51:46,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:46,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:51:46,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:47,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:47,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133803045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:47,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:47,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:51:47,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998882049] [2022-02-09 03:51:47,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:47,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:51:47,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:51:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:51:47,821 INFO L87 Difference]: Start difference. First operand 1477 states and 4368 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:48,632 INFO L93 Difference]: Finished difference Result 2828 states and 8191 transitions. [2022-02-09 03:51:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 03:51:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:48,652 INFO L225 Difference]: With dead ends: 2828 [2022-02-09 03:51:48,652 INFO L226 Difference]: Without dead ends: 2813 [2022-02-09 03:51:48,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 03:51:48,653 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 405 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:48,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 852 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 03:51:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-02-09 03:51:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1561. [2022-02-09 03:51:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.943589743589744) internal successors, (4592), 1560 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 4592 transitions. [2022-02-09 03:51:48,684 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 4592 transitions. Word has length 33 [2022-02-09 03:51:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:48,684 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 4592 transitions. [2022-02-09 03:51:48,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 4592 transitions. [2022-02-09 03:51:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:48,687 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:48,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:48,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-09 03:51:48,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:48,903 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1245308595, now seen corresponding path program 7 times [2022-02-09 03:51:48,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:48,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904313381] [2022-02-09 03:51:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:48,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:49,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:49,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904313381] [2022-02-09 03:51:49,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904313381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:49,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047476743] [2022-02-09 03:51:49,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:51:49,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:49,165 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) [2022-02-09 03:51:49,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-09 03:51:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:49,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:49,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:50,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047476743] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:50,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:50,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-09 03:51:50,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347993282] [2022-02-09 03:51:50,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:51:50,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:51:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:51:50,077 INFO L87 Difference]: Start difference. First operand 1561 states and 4592 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:51,213 INFO L93 Difference]: Finished difference Result 2465 states and 7079 transitions. [2022-02-09 03:51:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 03:51:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:51:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:51,219 INFO L225 Difference]: With dead ends: 2465 [2022-02-09 03:51:51,219 INFO L226 Difference]: Without dead ends: 2450 [2022-02-09 03:51:51,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:51:51,220 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 355 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:51,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1347 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1295 Invalid, 0 Unknown, 121 Unchecked, 0.5s Time] [2022-02-09 03:51:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-02-09 03:51:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1624. [2022-02-09 03:51:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.9457794208256316) internal successors, (4781), 1623 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4781 transitions. [2022-02-09 03:51:51,263 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4781 transitions. Word has length 33 [2022-02-09 03:51:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:51,263 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 4781 transitions. [2022-02-09 03:51:51,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4781 transitions. [2022-02-09 03:51:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:51,279 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:51,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:51,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:51,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:51,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1474067439, now seen corresponding path program 8 times [2022-02-09 03:51:51,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:51,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406363268] [2022-02-09 03:51:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:51,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:51,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:51,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406363268] [2022-02-09 03:51:51,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406363268] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:51,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421808947] [2022-02-09 03:51:51,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:51:51,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:51,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:51,696 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) [2022-02-09 03:51:51,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-09 03:51:51,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:51:51,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:51,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:51:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:51,941 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 5 treesize of output 3 [2022-02-09 03:51:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:52,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:52,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421808947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:52,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:52,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-09 03:51:52,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179437145] [2022-02-09 03:51:52,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:52,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:51:52,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:51:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:51:52,606 INFO L87 Difference]: Start difference. First operand 1624 states and 4781 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:53,598 INFO L93 Difference]: Finished difference Result 2828 states and 8159 transitions. [2022-02-09 03:51:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:51:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:53,603 INFO L225 Difference]: With dead ends: 2828 [2022-02-09 03:51:53,603 INFO L226 Difference]: Without dead ends: 2813 [2022-02-09 03:51:53,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 03:51:53,604 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 325 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:53,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1171 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:51:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-02-09 03:51:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1666. [2022-02-09 03:51:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.926126126126126) internal successors, (4872), 1665 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4872 transitions. [2022-02-09 03:51:53,631 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4872 transitions. Word has length 33 [2022-02-09 03:51:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:53,631 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4872 transitions. [2022-02-09 03:51:53,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4872 transitions. [2022-02-09 03:51:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:53,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:53,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:53,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:53,850 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,SelfDestructingSolverStorable10 [2022-02-09 03:51:53,850 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1874168057, now seen corresponding path program 9 times [2022-02-09 03:51:53,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:53,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849346965] [2022-02-09 03:51:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:53,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:54,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:54,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849346965] [2022-02-09 03:51:54,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849346965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:54,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766964065] [2022-02-09 03:51:54,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:51:54,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:54,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:54,099 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) [2022-02-09 03:51:54,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-09 03:51:54,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:51:54,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:51:54,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:54,335 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 5 treesize of output 3 [2022-02-09 03:51:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:54,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:55,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766964065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:55,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:55,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:51:55,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895847682] [2022-02-09 03:51:55,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:55,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:51:55,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:51:55,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:51:55,047 INFO L87 Difference]: Start difference. First operand 1666 states and 4872 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:56,094 INFO L93 Difference]: Finished difference Result 3012 states and 8678 transitions. [2022-02-09 03:51:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:51:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:56,100 INFO L225 Difference]: With dead ends: 3012 [2022-02-09 03:51:56,100 INFO L226 Difference]: Without dead ends: 2997 [2022-02-09 03:51:56,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:51:56,101 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 421 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:56,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1193 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:51:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2022-02-09 03:51:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1708. [2022-02-09 03:51:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.919742237844171) internal successors, (4984), 1707 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 4984 transitions. [2022-02-09 03:51:56,135 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 4984 transitions. Word has length 33 [2022-02-09 03:51:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:56,135 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 4984 transitions. [2022-02-09 03:51:56,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 4984 transitions. [2022-02-09 03:51:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:56,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:56,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:56,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:56,355 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1719730539, now seen corresponding path program 10 times [2022-02-09 03:51:56,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:56,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966526104] [2022-02-09 03:51:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:56,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:56,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:56,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966526104] [2022-02-09 03:51:56,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966526104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:56,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041132391] [2022-02-09 03:51:56,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:51:56,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:56,562 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) [2022-02-09 03:51:56,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-09 03:51:56,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:51:56,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:56,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:56,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:56,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:57,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041132391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:57,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:57,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:51:57,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62457584] [2022-02-09 03:51:57,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:57,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:51:57,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:51:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:51:57,418 INFO L87 Difference]: Start difference. First operand 1708 states and 4984 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:51:58,542 INFO L93 Difference]: Finished difference Result 3300 states and 9373 transitions. [2022-02-09 03:51:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-09 03:51:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:51:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:51:58,565 INFO L225 Difference]: With dead ends: 3300 [2022-02-09 03:51:58,565 INFO L226 Difference]: Without dead ends: 3279 [2022-02-09 03:51:58,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:51:58,567 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 402 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:51:58,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1330 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1297 Invalid, 0 Unknown, 136 Unchecked, 0.5s Time] [2022-02-09 03:51:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-02-09 03:51:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1732. [2022-02-09 03:51:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 2.9254766031195842) internal successors, (5064), 1731 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 5064 transitions. [2022-02-09 03:51:58,603 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 5064 transitions. Word has length 33 [2022-02-09 03:51:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:51:58,604 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 5064 transitions. [2022-02-09 03:51:58,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:51:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 5064 transitions. [2022-02-09 03:51:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:51:58,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:51:58,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:51:58,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-09 03:51:58,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-09 03:51:58,824 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:51:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:51:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash 143113699, now seen corresponding path program 11 times [2022-02-09 03:51:58,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:51:58,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092363060] [2022-02-09 03:51:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:51:58,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:51:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:51:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:59,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:51:59,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092363060] [2022-02-09 03:51:59,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092363060] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:51:59,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290726675] [2022-02-09 03:51:59,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:51:59,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:51:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:51:59,046 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) [2022-02-09 03:51:59,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-09 03:51:59,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:51:59,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:51:59,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:51:59,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:51:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:59,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:51:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:51:59,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290726675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:51:59,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:51:59,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:51:59,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287858514] [2022-02-09 03:51:59,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:51:59,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:51:59,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:51:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:51:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:51:59,855 INFO L87 Difference]: Start difference. First operand 1732 states and 5064 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:00,910 INFO L93 Difference]: Finished difference Result 3115 states and 8946 transitions. [2022-02-09 03:52:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 03:52:00,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:00,916 INFO L225 Difference]: With dead ends: 3115 [2022-02-09 03:52:00,917 INFO L226 Difference]: Without dead ends: 3100 [2022-02-09 03:52:00,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:52:00,918 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 425 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:00,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1335 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-02-09 03:52:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 1708. [2022-02-09 03:52:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.919742237844171) internal successors, (4984), 1707 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 4984 transitions. [2022-02-09 03:52:00,952 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 4984 transitions. Word has length 33 [2022-02-09 03:52:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:00,952 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 4984 transitions. [2022-02-09 03:52:00,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 4984 transitions. [2022-02-09 03:52:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:00,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:00,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:00,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:01,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-09 03:52:01,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -679839295, now seen corresponding path program 12 times [2022-02-09 03:52:01,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:01,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110845925] [2022-02-09 03:52:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:01,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:01,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:01,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110845925] [2022-02-09 03:52:01,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110845925] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:01,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156823535] [2022-02-09 03:52:01,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:52:01,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:01,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:01,371 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) [2022-02-09 03:52:01,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-09 03:52:01,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:52:01,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:01,583 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 5 treesize of output 3 [2022-02-09 03:52:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:01,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:02,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156823535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:02,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:02,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-09 03:52:02,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090257208] [2022-02-09 03:52:02,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:02,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:52:02,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:52:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:52:02,312 INFO L87 Difference]: Start difference. First operand 1708 states and 4984 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:03,566 INFO L93 Difference]: Finished difference Result 2497 states and 7196 transitions. [2022-02-09 03:52:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:52:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:03,571 INFO L225 Difference]: With dead ends: 2497 [2022-02-09 03:52:03,571 INFO L226 Difference]: Without dead ends: 2478 [2022-02-09 03:52:03,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:52:03,572 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 368 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:03,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1416 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-02-09 03:52:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 1734. [2022-02-09 03:52:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.9272937103289096) internal successors, (5073), 1733 states have internal predecessors, (5073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5073 transitions. [2022-02-09 03:52:03,601 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5073 transitions. Word has length 33 [2022-02-09 03:52:03,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:03,601 INFO L470 AbstractCegarLoop]: Abstraction has 1734 states and 5073 transitions. [2022-02-09 03:52:03,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5073 transitions. [2022-02-09 03:52:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:03,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:03,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:03,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:03,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-09 03:52:03,807 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash 196343169, now seen corresponding path program 13 times [2022-02-09 03:52:03,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:03,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458291782] [2022-02-09 03:52:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:03,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:04,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:04,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458291782] [2022-02-09 03:52:04,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458291782] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:04,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047480362] [2022-02-09 03:52:04,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:52:04,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:04,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:04,015 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) [2022-02-09 03:52:04,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-09 03:52:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:04,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:04,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:04,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:04,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047480362] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:04,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:04,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-09 03:52:04,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719178560] [2022-02-09 03:52:04,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:04,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 03:52:04,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 03:52:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-09 03:52:04,838 INFO L87 Difference]: Start difference. First operand 1734 states and 5073 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:06,014 INFO L93 Difference]: Finished difference Result 2497 states and 7190 transitions. [2022-02-09 03:52:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:52:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:06,025 INFO L225 Difference]: With dead ends: 2497 [2022-02-09 03:52:06,025 INFO L226 Difference]: Without dead ends: 2482 [2022-02-09 03:52:06,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:52:06,026 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 450 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:06,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 909 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:06,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-02-09 03:52:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1730. [2022-02-09 03:52:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 2.925968768074031) internal successors, (5059), 1729 states have internal predecessors, (5059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 5059 transitions. [2022-02-09 03:52:06,072 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 5059 transitions. Word has length 33 [2022-02-09 03:52:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:06,072 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 5059 transitions. [2022-02-09 03:52:06,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 5059 transitions. [2022-02-09 03:52:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:06,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:06,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:06,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:06,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-09 03:52:06,292 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1906792959, now seen corresponding path program 14 times [2022-02-09 03:52:06,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:06,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065389468] [2022-02-09 03:52:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:06,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:06,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:06,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065389468] [2022-02-09 03:52:06,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065389468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:06,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538693641] [2022-02-09 03:52:06,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:52:06,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:06,492 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) [2022-02-09 03:52:06,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-09 03:52:06,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:06,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:06,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:06,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:06,697 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 5 treesize of output 3 [2022-02-09 03:52:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:06,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:07,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538693641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:07,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:07,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-09 03:52:07,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850093699] [2022-02-09 03:52:07,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:07,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:52:07,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:52:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:52:07,340 INFO L87 Difference]: Start difference. First operand 1730 states and 5059 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:08,113 INFO L93 Difference]: Finished difference Result 2669 states and 7766 transitions. [2022-02-09 03:52:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 03:52:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:08,117 INFO L225 Difference]: With dead ends: 2669 [2022-02-09 03:52:08,118 INFO L226 Difference]: Without dead ends: 2650 [2022-02-09 03:52:08,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2022-02-09 03:52:08,118 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 284 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:08,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 1014 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 03:52:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-02-09 03:52:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1752. [2022-02-09 03:52:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-09 03:52:08,155 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-09 03:52:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:08,155 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-09 03:52:08,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-09 03:52:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:08,158 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:08,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:08,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-09 03:52:08,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:08,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 555256933, now seen corresponding path program 15 times [2022-02-09 03:52:08,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:08,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161105859] [2022-02-09 03:52:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:08,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:08,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:08,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161105859] [2022-02-09 03:52:08,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161105859] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:08,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791977975] [2022-02-09 03:52:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:52:08,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:08,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:08,584 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) [2022-02-09 03:52:08,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-09 03:52:08,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:52:08,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:08,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:52:08,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:09,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:09,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791977975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:09,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:09,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-09 03:52:09,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663013488] [2022-02-09 03:52:09,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:09,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:52:09,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:52:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:52:09,429 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:10,271 INFO L93 Difference]: Finished difference Result 2695 states and 7817 transitions. [2022-02-09 03:52:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 03:52:10,272 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:10,276 INFO L225 Difference]: With dead ends: 2695 [2022-02-09 03:52:10,276 INFO L226 Difference]: Without dead ends: 2680 [2022-02-09 03:52:10,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 03:52:10,277 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 297 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:10,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1078 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 03:52:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-02-09 03:52:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1752. [2022-02-09 03:52:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-09 03:52:10,312 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-09 03:52:10,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:10,312 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-09 03:52:10,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:10,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-09 03:52:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:10,315 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:10,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:10,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:10,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-09 03:52:10,521 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -300690715, now seen corresponding path program 16 times [2022-02-09 03:52:10,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:10,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941975271] [2022-02-09 03:52:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:10,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:10,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:10,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941975271] [2022-02-09 03:52:10,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941975271] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:10,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334464642] [2022-02-09 03:52:10,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:52:10,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:10,751 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) [2022-02-09 03:52:10,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-09 03:52:10,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:52:10,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:10,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:10,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:11,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:11,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334464642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:11,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:11,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-09 03:52:11,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682707214] [2022-02-09 03:52:11,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:11,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 03:52:11,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 03:52:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-09 03:52:11,658 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:12,918 INFO L93 Difference]: Finished difference Result 2604 states and 7441 transitions. [2022-02-09 03:52:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:52:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:12,923 INFO L225 Difference]: With dead ends: 2604 [2022-02-09 03:52:12,923 INFO L226 Difference]: Without dead ends: 2589 [2022-02-09 03:52:12,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:52:12,923 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 415 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:12,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1184 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2022-02-09 03:52:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1773. [2022-02-09 03:52:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 2.9283295711060946) internal successors, (5189), 1772 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 5189 transitions. [2022-02-09 03:52:12,950 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 5189 transitions. Word has length 33 [2022-02-09 03:52:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:12,950 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 5189 transitions. [2022-02-09 03:52:12,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 5189 transitions. [2022-02-09 03:52:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:12,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:12,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:12,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-02-09 03:52:13,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:13,157 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1967089301, now seen corresponding path program 17 times [2022-02-09 03:52:13,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:13,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689243611] [2022-02-09 03:52:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:13,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:13,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:13,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689243611] [2022-02-09 03:52:13,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689243611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:13,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480279350] [2022-02-09 03:52:13,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:52:13,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:13,369 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) [2022-02-09 03:52:13,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-09 03:52:13,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:52:13,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:13,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:13,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:13,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:14,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480279350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:14,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:14,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-09 03:52:14,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140053087] [2022-02-09 03:52:14,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:14,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-09 03:52:14,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:14,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-09 03:52:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-02-09 03:52:14,131 INFO L87 Difference]: Start difference. First operand 1773 states and 5189 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:15,217 INFO L93 Difference]: Finished difference Result 2575 states and 7376 transitions. [2022-02-09 03:52:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 03:52:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:15,221 INFO L225 Difference]: With dead ends: 2575 [2022-02-09 03:52:15,221 INFO L226 Difference]: Without dead ends: 2560 [2022-02-09 03:52:15,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:52:15,222 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 362 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:15,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 930 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 03:52:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-02-09 03:52:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1752. [2022-02-09 03:52:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-09 03:52:15,247 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-09 03:52:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:15,247 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-09 03:52:15,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-09 03:52:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:15,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:15,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:15,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:15,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:15,466 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1441716885, now seen corresponding path program 18 times [2022-02-09 03:52:15,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:15,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261419167] [2022-02-09 03:52:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:15,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:15,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:15,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261419167] [2022-02-09 03:52:15,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261419167] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:15,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878728560] [2022-02-09 03:52:15,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:52:15,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:15,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:15,654 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) [2022-02-09 03:52:15,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-09 03:52:15,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:52:15,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:15,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:15,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:15,865 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 5 treesize of output 3 [2022-02-09 03:52:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:16,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:16,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878728560] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:16,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:16,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:52:16,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370120602] [2022-02-09 03:52:16,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:16,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:16,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:16,586 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:17,736 INFO L93 Difference]: Finished difference Result 3000 states and 8661 transitions. [2022-02-09 03:52:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 03:52:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:17,741 INFO L225 Difference]: With dead ends: 3000 [2022-02-09 03:52:17,741 INFO L226 Difference]: Without dead ends: 2981 [2022-02-09 03:52:17,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 03:52:17,742 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 390 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:17,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1336 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-02-09 03:52:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1760. [2022-02-09 03:52:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 2.920977828311541) internal successors, (5138), 1759 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5138 transitions. [2022-02-09 03:52:17,768 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5138 transitions. Word has length 33 [2022-02-09 03:52:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:17,769 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5138 transitions. [2022-02-09 03:52:17,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5138 transitions. [2022-02-09 03:52:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:17,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:17,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:17,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:17,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:17,973 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1977067947, now seen corresponding path program 19 times [2022-02-09 03:52:17,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:17,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373580288] [2022-02-09 03:52:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:17,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:18,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:18,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373580288] [2022-02-09 03:52:18,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373580288] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:18,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928683033] [2022-02-09 03:52:18,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:52:18,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:18,203 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) [2022-02-09 03:52:18,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-09 03:52:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:18,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:18,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:18,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:19,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928683033] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:19,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:19,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:52:19,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054353396] [2022-02-09 03:52:19,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:19,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:52:19,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:52:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:52:19,014 INFO L87 Difference]: Start difference. First operand 1760 states and 5138 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:20,331 INFO L93 Difference]: Finished difference Result 2579 states and 7434 transitions. [2022-02-09 03:52:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:52:20,331 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:20,335 INFO L225 Difference]: With dead ends: 2579 [2022-02-09 03:52:20,336 INFO L226 Difference]: Without dead ends: 2564 [2022-02-09 03:52:20,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:52:20,337 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 475 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:20,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1166 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-02-09 03:52:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1752. [2022-02-09 03:52:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-09 03:52:20,361 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-09 03:52:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-09 03:52:20,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-09 03:52:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:20,363 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:20,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:20,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:20,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:20,564 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -703095831, now seen corresponding path program 20 times [2022-02-09 03:52:20,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:20,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021384764] [2022-02-09 03:52:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:20,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:20,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:20,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021384764] [2022-02-09 03:52:20,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021384764] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:20,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224172679] [2022-02-09 03:52:20,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:52:20,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:20,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:20,795 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) [2022-02-09 03:52:20,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-09 03:52:20,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:20,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:20,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:20,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:21,008 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 5 treesize of output 3 [2022-02-09 03:52:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:21,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:21,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224172679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:21,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:21,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:52:21,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997335098] [2022-02-09 03:52:21,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:21,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:21,707 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:23,149 INFO L93 Difference]: Finished difference Result 2751 states and 7877 transitions. [2022-02-09 03:52:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 03:52:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:23,153 INFO L225 Difference]: With dead ends: 2751 [2022-02-09 03:52:23,153 INFO L226 Difference]: Without dead ends: 2736 [2022-02-09 03:52:23,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=393, Invalid=1959, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 03:52:23,154 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 393 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:23,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1489 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-02-09 03:52:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1794. [2022-02-09 03:52:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 2.92526491912995) internal successors, (5245), 1793 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 5245 transitions. [2022-02-09 03:52:23,177 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 5245 transitions. Word has length 33 [2022-02-09 03:52:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:23,177 INFO L470 AbstractCegarLoop]: Abstraction has 1794 states and 5245 transitions. [2022-02-09 03:52:23,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 5245 transitions. [2022-02-09 03:52:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:23,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:23,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:23,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:23,380 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,SelfDestructingSolverStorable22 [2022-02-09 03:52:23,381 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1925472879, now seen corresponding path program 21 times [2022-02-09 03:52:23,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:23,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637122924] [2022-02-09 03:52:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:23,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:23,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:23,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637122924] [2022-02-09 03:52:23,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637122924] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:23,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029854538] [2022-02-09 03:52:23,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:52:23,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:23,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:23,583 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) [2022-02-09 03:52:23,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-09 03:52:23,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:52:23,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:23,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:52:23,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:24,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:24,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029854538] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:24,435 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:24,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:52:24,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217282662] [2022-02-09 03:52:24,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:24,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:24,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:24,436 INFO L87 Difference]: Start difference. First operand 1794 states and 5245 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:25,592 INFO L93 Difference]: Finished difference Result 3076 states and 8840 transitions. [2022-02-09 03:52:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:52:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:25,597 INFO L225 Difference]: With dead ends: 3076 [2022-02-09 03:52:25,597 INFO L226 Difference]: Without dead ends: 3061 [2022-02-09 03:52:25,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 03:52:25,599 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 367 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:25,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1349 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2022-02-09 03:52:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1752. [2022-02-09 03:52:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-09 03:52:25,630 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-09 03:52:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-09 03:52:25,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-09 03:52:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:25,633 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:25,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:25,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:25,850 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,SelfDestructingSolverStorable23 [2022-02-09 03:52:25,850 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 503592163, now seen corresponding path program 22 times [2022-02-09 03:52:25,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:25,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385247351] [2022-02-09 03:52:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:25,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:26,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:26,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385247351] [2022-02-09 03:52:26,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385247351] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:26,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558414113] [2022-02-09 03:52:26,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:52:26,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:26,035 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) [2022-02-09 03:52:26,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-09 03:52:26,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:52:26,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:26,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:26,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:26,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:26,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558414113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:26,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:26,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:52:26,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613830272] [2022-02-09 03:52:26,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:26,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:52:26,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:52:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:52:26,810 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:28,212 INFO L93 Difference]: Finished difference Result 3531 states and 10017 transitions. [2022-02-09 03:52:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:52:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:28,218 INFO L225 Difference]: With dead ends: 3531 [2022-02-09 03:52:28,218 INFO L226 Difference]: Without dead ends: 3512 [2022-02-09 03:52:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=1831, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:52:28,219 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 391 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:28,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1405 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:52:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-02-09 03:52:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1756. [2022-02-09 03:52:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 2.920797720797721) internal successors, (5126), 1755 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 5126 transitions. [2022-02-09 03:52:28,249 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 5126 transitions. Word has length 33 [2022-02-09 03:52:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:28,249 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 5126 transitions. [2022-02-09 03:52:28,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 5126 transitions. [2022-02-09 03:52:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:28,251 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:28,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:28,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-09 03:52:28,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:28,452 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:28,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1379774627, now seen corresponding path program 23 times [2022-02-09 03:52:28,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:28,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946487709] [2022-02-09 03:52:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:28,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:28,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:28,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946487709] [2022-02-09 03:52:28,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946487709] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:28,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868900057] [2022-02-09 03:52:28,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:52:28,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:28,655 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) [2022-02-09 03:52:28,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-09 03:52:28,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:28,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:28,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:28,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:29,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:29,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868900057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:29,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:29,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:52:29,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470141921] [2022-02-09 03:52:29,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:29,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:52:29,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:52:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:52:29,498 INFO L87 Difference]: Start difference. First operand 1756 states and 5126 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:31,073 INFO L93 Difference]: Finished difference Result 2999 states and 8496 transitions. [2022-02-09 03:52:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:52:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:31,079 INFO L225 Difference]: With dead ends: 2999 [2022-02-09 03:52:31,079 INFO L226 Difference]: Without dead ends: 2984 [2022-02-09 03:52:31,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2022-02-09 03:52:31,080 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 507 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:31,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1195 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-02-09 03:52:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1744. [2022-02-09 03:52:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 2.919104991394148) internal successors, (5088), 1743 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 5088 transitions. [2022-02-09 03:52:31,112 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 5088 transitions. Word has length 33 [2022-02-09 03:52:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:31,112 INFO L470 AbstractCegarLoop]: Abstraction has 1744 states and 5088 transitions. [2022-02-09 03:52:31,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 5088 transitions. [2022-02-09 03:52:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:31,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:31,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:31,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:31,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:31,329 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1508202277, now seen corresponding path program 24 times [2022-02-09 03:52:31,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:31,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476391194] [2022-02-09 03:52:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:31,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:31,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:31,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476391194] [2022-02-09 03:52:31,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476391194] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:31,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783573233] [2022-02-09 03:52:31,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:52:31,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:31,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:31,553 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) [2022-02-09 03:52:31,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-09 03:52:31,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:52:31,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:31,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:31,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:31,763 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 5 treesize of output 3 [2022-02-09 03:52:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:32,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:32,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783573233] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:32,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:32,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:52:32,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789159303] [2022-02-09 03:52:32,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:32,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:32,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:32,488 INFO L87 Difference]: Start difference. First operand 1744 states and 5088 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:34,173 INFO L93 Difference]: Finished difference Result 2872 states and 8162 transitions. [2022-02-09 03:52:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:52:34,173 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:34,178 INFO L225 Difference]: With dead ends: 2872 [2022-02-09 03:52:34,178 INFO L226 Difference]: Without dead ends: 2857 [2022-02-09 03:52:34,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=453, Invalid=2409, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:52:34,179 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 549 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:34,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1434 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-02-09 03:52:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1765. [2022-02-09 03:52:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 2.9280045351473922) internal successors, (5165), 1764 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 5165 transitions. [2022-02-09 03:52:34,205 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 5165 transitions. Word has length 33 [2022-02-09 03:52:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:34,205 INFO L470 AbstractCegarLoop]: Abstraction has 1765 states and 5165 transitions. [2022-02-09 03:52:34,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 5165 transitions. [2022-02-09 03:52:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:34,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:34,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:34,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:34,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-09 03:52:34,409 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash -158196309, now seen corresponding path program 25 times [2022-02-09 03:52:34,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:34,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643708022] [2022-02-09 03:52:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:34,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:34,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:34,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643708022] [2022-02-09 03:52:34,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643708022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:34,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536070818] [2022-02-09 03:52:34,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:52:34,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:34,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:34,617 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) [2022-02-09 03:52:34,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-09 03:52:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:34,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:34,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:34,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:35,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536070818] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:35,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:35,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:52:35,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783438564] [2022-02-09 03:52:35,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:35,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:52:35,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:52:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:52:35,409 INFO L87 Difference]: Start difference. First operand 1765 states and 5165 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:36,466 INFO L93 Difference]: Finished difference Result 3246 states and 9268 transitions. [2022-02-09 03:52:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-09 03:52:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:36,473 INFO L225 Difference]: With dead ends: 3246 [2022-02-09 03:52:36,473 INFO L226 Difference]: Without dead ends: 3231 [2022-02-09 03:52:36,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:52:36,474 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 409 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:36,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1124 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:52:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2022-02-09 03:52:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1702. [2022-02-09 03:52:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.9253380364491477) internal successors, (4976), 1701 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4976 transitions. [2022-02-09 03:52:36,503 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4976 transitions. Word has length 33 [2022-02-09 03:52:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:36,503 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4976 transitions. [2022-02-09 03:52:36,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4976 transitions. [2022-02-09 03:52:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:36,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:36,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:36,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:36,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-09 03:52:36,707 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 758312315, now seen corresponding path program 26 times [2022-02-09 03:52:36,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:36,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068110130] [2022-02-09 03:52:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:36,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:36,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:36,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068110130] [2022-02-09 03:52:36,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068110130] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:36,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965563747] [2022-02-09 03:52:36,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:52:36,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:36,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:36,968 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) [2022-02-09 03:52:36,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-09 03:52:36,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:36,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:36,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:37,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:37,254 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 5 treesize of output 3 [2022-02-09 03:52:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:37,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:37,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965563747] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:37,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:37,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 03:52:37,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407593231] [2022-02-09 03:52:37,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:37,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:37,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:37,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:37,936 INFO L87 Difference]: Start difference. First operand 1702 states and 4976 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:39,092 INFO L93 Difference]: Finished difference Result 3477 states and 9924 transitions. [2022-02-09 03:52:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-09 03:52:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:39,098 INFO L225 Difference]: With dead ends: 3477 [2022-02-09 03:52:39,098 INFO L226 Difference]: Without dead ends: 3462 [2022-02-09 03:52:39,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:52:39,099 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:39,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1353 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-02-09 03:52:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 1726. [2022-02-09 03:52:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 2.926376811594203) internal successors, (5048), 1725 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 5048 transitions. [2022-02-09 03:52:39,129 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 5048 transitions. Word has length 33 [2022-02-09 03:52:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:39,129 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 5048 transitions. [2022-02-09 03:52:39,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 5048 transitions. [2022-02-09 03:52:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:39,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:39,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:39,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:39,347 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,SelfDestructingSolverStorable28 [2022-02-09 03:52:39,347 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash -10419781, now seen corresponding path program 27 times [2022-02-09 03:52:39,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:39,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214031772] [2022-02-09 03:52:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:39,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:39,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:39,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214031772] [2022-02-09 03:52:39,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214031772] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:39,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856809001] [2022-02-09 03:52:39,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:52:39,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:39,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:39,566 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) [2022-02-09 03:52:39,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-09 03:52:39,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:52:39,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:39,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:39,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:39,831 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 5 treesize of output 3 [2022-02-09 03:52:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:40,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:40,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856809001] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:40,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:40,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-09 03:52:40,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590605730] [2022-02-09 03:52:40,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:40,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:52:40,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:40,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:52:40,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:52:40,532 INFO L87 Difference]: Start difference. First operand 1726 states and 5048 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:41,818 INFO L93 Difference]: Finished difference Result 3304 states and 9446 transitions. [2022-02-09 03:52:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:52:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:41,823 INFO L225 Difference]: With dead ends: 3304 [2022-02-09 03:52:41,823 INFO L226 Difference]: Without dead ends: 3285 [2022-02-09 03:52:41,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=254, Invalid=1638, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:52:41,824 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 384 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:41,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1522 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-02-09 03:52:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 1738. [2022-02-09 03:52:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 2.9280368451352907) internal successors, (5086), 1737 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 5086 transitions. [2022-02-09 03:52:41,852 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 5086 transitions. Word has length 33 [2022-02-09 03:52:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:41,852 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 5086 transitions. [2022-02-09 03:52:41,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 5086 transitions. [2022-02-09 03:52:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:41,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:41,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:41,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:42,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:42,078 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 865762683, now seen corresponding path program 28 times [2022-02-09 03:52:42,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:42,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352119634] [2022-02-09 03:52:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:42,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:42,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:42,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352119634] [2022-02-09 03:52:42,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352119634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:42,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552440852] [2022-02-09 03:52:42,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:52:42,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:42,315 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) [2022-02-09 03:52:42,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-09 03:52:42,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:52:42,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:42,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:42,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:43,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552440852] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:43,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:43,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-09 03:52:43,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887156276] [2022-02-09 03:52:43,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:43,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:52:43,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:52:43,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:52:43,110 INFO L87 Difference]: Start difference. First operand 1738 states and 5086 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:44,536 INFO L93 Difference]: Finished difference Result 2959 states and 8420 transitions. [2022-02-09 03:52:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:52:44,536 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:44,541 INFO L225 Difference]: With dead ends: 2959 [2022-02-09 03:52:44,541 INFO L226 Difference]: Without dead ends: 2944 [2022-02-09 03:52:44,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 03:52:44,541 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 453 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:44,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1533 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2022-02-09 03:52:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1734. [2022-02-09 03:52:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.9267166762839008) internal successors, (5072), 1733 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5072 transitions. [2022-02-09 03:52:44,568 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5072 transitions. Word has length 33 [2022-02-09 03:52:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 1734 states and 5072 transitions. [2022-02-09 03:52:44,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5072 transitions. [2022-02-09 03:52:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:44,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:44,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:44,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:44,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:44,784 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash 131295359, now seen corresponding path program 29 times [2022-02-09 03:52:44,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:44,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970932069] [2022-02-09 03:52:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:44,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:45,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:45,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970932069] [2022-02-09 03:52:45,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970932069] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:45,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684391601] [2022-02-09 03:52:45,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:52:45,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:45,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:45,006 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) [2022-02-09 03:52:45,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-09 03:52:45,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:45,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:45,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:45,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:45,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:45,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684391601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:45,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:45,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-09 03:52:45,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443412551] [2022-02-09 03:52:45,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:45,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-09 03:52:45,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-09 03:52:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-02-09 03:52:45,903 INFO L87 Difference]: Start difference. First operand 1734 states and 5072 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:47,244 INFO L93 Difference]: Finished difference Result 3396 states and 9730 transitions. [2022-02-09 03:52:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-09 03:52:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:47,250 INFO L225 Difference]: With dead ends: 3396 [2022-02-09 03:52:47,250 INFO L226 Difference]: Without dead ends: 3381 [2022-02-09 03:52:47,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=2196, Unknown=0, NotChecked=0, Total=2550 [2022-02-09 03:52:47,251 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 532 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:47,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 1675 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:52:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2022-02-09 03:52:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 1730. [2022-02-09 03:52:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 2.926547137073453) internal successors, (5060), 1729 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 5060 transitions. [2022-02-09 03:52:47,278 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 5060 transitions. Word has length 33 [2022-02-09 03:52:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:47,278 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 5060 transitions. [2022-02-09 03:52:47,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 5060 transitions. [2022-02-09 03:52:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:47,281 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:47,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:47,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:47,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:47,482 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1151852101, now seen corresponding path program 30 times [2022-02-09 03:52:47,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:47,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732999029] [2022-02-09 03:52:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:47,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:47,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:47,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732999029] [2022-02-09 03:52:47,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732999029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:47,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463020880] [2022-02-09 03:52:47,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:52:47,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:47,681 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) [2022-02-09 03:52:47,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-09 03:52:47,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:52:47,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:47,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:47,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:47,904 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 5 treesize of output 3 [2022-02-09 03:52:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:48,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:48,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463020880] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:48,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:48,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 03:52:48,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683562548] [2022-02-09 03:52:48,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:48,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:48,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:48,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:48,676 INFO L87 Difference]: Start difference. First operand 1730 states and 5060 transitions. Second operand has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:50,160 INFO L93 Difference]: Finished difference Result 3775 states and 10681 transitions. [2022-02-09 03:52:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:52:50,161 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:50,167 INFO L225 Difference]: With dead ends: 3775 [2022-02-09 03:52:50,167 INFO L226 Difference]: Without dead ends: 3760 [2022-02-09 03:52:50,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=1946, Unknown=0, NotChecked=0, Total=2256 [2022-02-09 03:52:50,168 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 473 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:50,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1644 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:52:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2022-02-09 03:52:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 1710. [2022-02-09 03:52:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 2.925687536571094) internal successors, (5000), 1709 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 5000 transitions. [2022-02-09 03:52:50,201 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 5000 transitions. Word has length 33 [2022-02-09 03:52:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:50,201 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 5000 transitions. [2022-02-09 03:52:50,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 5000 transitions. [2022-02-09 03:52:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:50,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:50,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:50,419 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,SelfDestructingSolverStorable32 [2022-02-09 03:52:50,419 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:50,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1721940609, now seen corresponding path program 31 times [2022-02-09 03:52:50,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:50,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318549901] [2022-02-09 03:52:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:50,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:50,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:50,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318549901] [2022-02-09 03:52:50,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318549901] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:50,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433331507] [2022-02-09 03:52:50,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:52:50,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:50,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:50,656 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) [2022-02-09 03:52:50,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-09 03:52:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:51,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:51,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433331507] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:51,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:51,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-09 03:52:51,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092765001] [2022-02-09 03:52:51,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:51,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:52:51,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:52:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:52:51,392 INFO L87 Difference]: Start difference. First operand 1710 states and 5000 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:52,704 INFO L93 Difference]: Finished difference Result 3763 states and 10685 transitions. [2022-02-09 03:52:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-09 03:52:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:52,710 INFO L225 Difference]: With dead ends: 3763 [2022-02-09 03:52:52,710 INFO L226 Difference]: Without dead ends: 3748 [2022-02-09 03:52:52,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:52:52,711 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 361 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:52,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1906 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:52:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-02-09 03:52:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 1731. [2022-02-09 03:52:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1730 states have (on average 2.921387283236994) internal successors, (5054), 1730 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 5054 transitions. [2022-02-09 03:52:52,745 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 5054 transitions. Word has length 33 [2022-02-09 03:52:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:52,746 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 5054 transitions. [2022-02-09 03:52:52,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 5054 transitions. [2022-02-09 03:52:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:52,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:52,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:52,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-09 03:52:52,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:52,949 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash -485112675, now seen corresponding path program 32 times [2022-02-09 03:52:52,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:52,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477979682] [2022-02-09 03:52:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:52,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:53,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:53,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477979682] [2022-02-09 03:52:53,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477979682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:53,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237291463] [2022-02-09 03:52:53,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:52:53,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:53,165 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) [2022-02-09 03:52:53,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-09 03:52:53,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:52:53,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:53,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:53,459 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 5 treesize of output 3 [2022-02-09 03:52:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:53,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:54,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237291463] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:54,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:54,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-09 03:52:54,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851234859] [2022-02-09 03:52:54,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:54,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:52:54,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:52:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:52:54,115 INFO L87 Difference]: Start difference. First operand 1731 states and 5054 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:55,305 INFO L93 Difference]: Finished difference Result 3664 states and 10402 transitions. [2022-02-09 03:52:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:52:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:52:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:55,311 INFO L225 Difference]: With dead ends: 3664 [2022-02-09 03:52:55,311 INFO L226 Difference]: Without dead ends: 3649 [2022-02-09 03:52:55,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:52:55,312 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 340 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:55,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1674 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:52:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-02-09 03:52:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1768. [2022-02-09 03:52:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1767 states have (on average 2.9134125636672326) internal successors, (5148), 1767 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 5148 transitions. [2022-02-09 03:52:55,340 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 5148 transitions. Word has length 33 [2022-02-09 03:52:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:55,340 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 5148 transitions. [2022-02-09 03:52:55,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 5148 transitions. [2022-02-09 03:52:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:55,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:55,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:55,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-09 03:52:55,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:55,543 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 68792961, now seen corresponding path program 33 times [2022-02-09 03:52:55,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:55,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807380535] [2022-02-09 03:52:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:55,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:55,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:55,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807380535] [2022-02-09 03:52:55,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807380535] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:55,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401315396] [2022-02-09 03:52:55,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:52:55,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:55,772 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) [2022-02-09 03:52:55,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-09 03:52:55,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:52:55,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:52:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:56,085 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 5 treesize of output 3 [2022-02-09 03:52:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:56,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:56,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401315396] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:56,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:56,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 03:52:56,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244296431] [2022-02-09 03:52:56,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:56,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:52:56,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:52:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:52:56,771 INFO L87 Difference]: Start difference. First operand 1768 states and 5148 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:52:57,824 INFO L93 Difference]: Finished difference Result 3390 states and 9689 transitions. [2022-02-09 03:52:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:52:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:52:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:52:57,830 INFO L225 Difference]: With dead ends: 3390 [2022-02-09 03:52:57,830 INFO L226 Difference]: Without dead ends: 3375 [2022-02-09 03:52:57,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:52:57,831 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 373 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:52:57,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1420 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:52:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-02-09 03:52:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1852. [2022-02-09 03:52:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 2.902215018908698) internal successors, (5372), 1851 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 5372 transitions. [2022-02-09 03:52:57,858 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 5372 transitions. Word has length 33 [2022-02-09 03:52:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:52:57,858 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 5372 transitions. [2022-02-09 03:52:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:52:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 5372 transitions. [2022-02-09 03:52:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:52:57,860 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:52:57,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:52:57,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-09 03:52:58,063 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,SelfDestructingSolverStorable35 [2022-02-09 03:52:58,064 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:52:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:52:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash 226317897, now seen corresponding path program 34 times [2022-02-09 03:52:58,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:52:58,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783626961] [2022-02-09 03:52:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:52:58,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:52:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:52:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:58,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:52:58,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783626961] [2022-02-09 03:52:58,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783626961] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:52:58,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457327111] [2022-02-09 03:52:58,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:52:58,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:52:58,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:52:58,284 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) [2022-02-09 03:52:58,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-09 03:52:58,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:52:58,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:52:58,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:52:58,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:52:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:58,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:52:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:52:59,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457327111] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:52:59,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:52:59,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-09 03:52:59,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229564587] [2022-02-09 03:52:59,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:52:59,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:52:59,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:52:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:52:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:52:59,125 INFO L87 Difference]: Start difference. First operand 1852 states and 5372 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:00,488 INFO L93 Difference]: Finished difference Result 3075 states and 8701 transitions. [2022-02-09 03:53:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:53:00,488 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:00,492 INFO L225 Difference]: With dead ends: 3075 [2022-02-09 03:53:00,492 INFO L226 Difference]: Without dead ends: 3060 [2022-02-09 03:53:00,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1849, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:53:00,493 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 370 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:00,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1806 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1660 Invalid, 0 Unknown, 287 Unchecked, 0.6s Time] [2022-02-09 03:53:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-02-09 03:53:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 1915. [2022-02-09 03:53:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 2.9054336468129573) internal successors, (5561), 1914 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 5561 transitions. [2022-02-09 03:53:00,520 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 5561 transitions. Word has length 33 [2022-02-09 03:53:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:00,520 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 5561 transitions. [2022-02-09 03:53:00,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 5561 transitions. [2022-02-09 03:53:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:00,522 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:00,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:00,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-09 03:53:00,723 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,SelfDestructingSolverStorable36 [2022-02-09 03:53:00,723 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2440947, now seen corresponding path program 35 times [2022-02-09 03:53:00,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:00,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953403569] [2022-02-09 03:53:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:00,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:00,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:00,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953403569] [2022-02-09 03:53:00,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953403569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:00,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471578458] [2022-02-09 03:53:00,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:53:00,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:00,970 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) [2022-02-09 03:53:00,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-09 03:53:00,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:53:00,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:00,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:01,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:01,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471578458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:01,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:01,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-09 03:53:01,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958072856] [2022-02-09 03:53:01,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:01,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:53:01,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:53:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:53:01,774 INFO L87 Difference]: Start difference. First operand 1915 states and 5561 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:02,784 INFO L93 Difference]: Finished difference Result 3354 states and 9559 transitions. [2022-02-09 03:53:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:53:02,784 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:02,790 INFO L225 Difference]: With dead ends: 3354 [2022-02-09 03:53:02,790 INFO L226 Difference]: Without dead ends: 3339 [2022-02-09 03:53:02,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=1708, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:53:02,790 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 418 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:02,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1184 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:53:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-02-09 03:53:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 1894. [2022-02-09 03:53:02,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 2.8969889064976226) internal successors, (5484), 1893 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 5484 transitions. [2022-02-09 03:53:02,819 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 5484 transitions. Word has length 33 [2022-02-09 03:53:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 5484 transitions. [2022-02-09 03:53:02,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 5484 transitions. [2022-02-09 03:53:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:02,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:02,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:02,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:03,022 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,SelfDestructingSolverStorable37 [2022-02-09 03:53:03,022 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -949172747, now seen corresponding path program 36 times [2022-02-09 03:53:03,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:03,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300565184] [2022-02-09 03:53:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:03,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:03,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:03,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300565184] [2022-02-09 03:53:03,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300565184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:03,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896405580] [2022-02-09 03:53:03,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:53:03,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:03,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:03,267 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) [2022-02-09 03:53:03,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-09 03:53:03,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:53:03,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:03,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:03,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:03,513 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 5 treesize of output 3 [2022-02-09 03:53:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:03,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:04,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896405580] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:04,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:04,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 03:53:04,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496613797] [2022-02-09 03:53:04,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:04,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:04,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:04,297 INFO L87 Difference]: Start difference. First operand 1894 states and 5484 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:05,478 INFO L93 Difference]: Finished difference Result 3383 states and 9677 transitions. [2022-02-09 03:53:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:05,484 INFO L225 Difference]: With dead ends: 3383 [2022-02-09 03:53:05,484 INFO L226 Difference]: Without dead ends: 3368 [2022-02-09 03:53:05,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=1533, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:53:05,485 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 398 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:05,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1539 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2022-02-09 03:53:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1873. [2022-02-09 03:53:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 2.8995726495726495) internal successors, (5428), 1872 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 5428 transitions. [2022-02-09 03:53:05,513 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 5428 transitions. Word has length 33 [2022-02-09 03:53:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:05,513 INFO L470 AbstractCegarLoop]: Abstraction has 1873 states and 5428 transitions. [2022-02-09 03:53:05,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 5428 transitions. [2022-02-09 03:53:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:05,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:05,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:05,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:05,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-09 03:53:05,716 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1103610265, now seen corresponding path program 37 times [2022-02-09 03:53:05,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:05,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347295041] [2022-02-09 03:53:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:05,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:05,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:05,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347295041] [2022-02-09 03:53:05,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347295041] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:05,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066887693] [2022-02-09 03:53:05,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:53:05,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:05,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:05,928 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) [2022-02-09 03:53:05,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-09 03:53:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:05,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:05,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:06,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066887693] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:06,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:06,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-09 03:53:06,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889220034] [2022-02-09 03:53:06,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:06,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-09 03:53:06,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-09 03:53:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-02-09 03:53:06,782 INFO L87 Difference]: Start difference. First operand 1873 states and 5428 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:07,672 INFO L93 Difference]: Finished difference Result 3522 states and 10009 transitions. [2022-02-09 03:53:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:53:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:07,678 INFO L225 Difference]: With dead ends: 3522 [2022-02-09 03:53:07,678 INFO L226 Difference]: Without dead ends: 3516 [2022-02-09 03:53:07,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1399, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:53:07,679 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 358 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:07,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 1428 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1251 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2022-02-09 03:53:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-02-09 03:53:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1909. [2022-02-09 03:53:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 2.903039832285115) internal successors, (5539), 1908 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 5539 transitions. [2022-02-09 03:53:07,709 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 5539 transitions. Word has length 33 [2022-02-09 03:53:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:07,709 INFO L470 AbstractCegarLoop]: Abstraction has 1909 states and 5539 transitions. [2022-02-09 03:53:07,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 5539 transitions. [2022-02-09 03:53:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:07,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:07,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:07,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:07,912 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,SelfDestructingSolverStorable39 [2022-02-09 03:53:07,912 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1473614485, now seen corresponding path program 38 times [2022-02-09 03:53:07,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:07,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175799002] [2022-02-09 03:53:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:07,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:08,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:08,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175799002] [2022-02-09 03:53:08,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175799002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:08,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034667801] [2022-02-09 03:53:08,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:53:08,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:08,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:08,160 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) [2022-02-09 03:53:08,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-09 03:53:08,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:08,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:08,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:08,378 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 5 treesize of output 3 [2022-02-09 03:53:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:08,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:09,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034667801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:09,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:09,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-09 03:53:09,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002258813] [2022-02-09 03:53:09,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:09,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:09,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:09,199 INFO L87 Difference]: Start difference. First operand 1909 states and 5539 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:10,527 INFO L93 Difference]: Finished difference Result 3502 states and 9990 transitions. [2022-02-09 03:53:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:53:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:10,533 INFO L225 Difference]: With dead ends: 3502 [2022-02-09 03:53:10,533 INFO L226 Difference]: Without dead ends: 3487 [2022-02-09 03:53:10,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:53:10,533 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 319 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:10,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1943 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:53:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-02-09 03:53:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 1768. [2022-02-09 03:53:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1767 states have (on average 2.9134125636672326) internal successors, (5148), 1767 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 5148 transitions. [2022-02-09 03:53:10,559 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 5148 transitions. Word has length 33 [2022-02-09 03:53:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:10,559 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 5148 transitions. [2022-02-09 03:53:10,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 5148 transitions. [2022-02-09 03:53:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:10,561 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:10,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:10,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-09 03:53:10,761 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,SelfDestructingSolverStorable40 [2022-02-09 03:53:10,762 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 603202051, now seen corresponding path program 39 times [2022-02-09 03:53:10,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:10,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798115058] [2022-02-09 03:53:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:10,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:10,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:10,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798115058] [2022-02-09 03:53:10,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798115058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:10,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050899313] [2022-02-09 03:53:10,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:53:10,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:10,987 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) [2022-02-09 03:53:10,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-09 03:53:11,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:53:11,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:11,258 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 5 treesize of output 3 [2022-02-09 03:53:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:11,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:11,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050899313] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:11,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:11,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:53:11,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141833224] [2022-02-09 03:53:11,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:11,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:11,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:11,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:11,843 INFO L87 Difference]: Start difference. First operand 1768 states and 5148 transitions. Second operand has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:12,885 INFO L93 Difference]: Finished difference Result 3296 states and 9482 transitions. [2022-02-09 03:53:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:12,891 INFO L225 Difference]: With dead ends: 3296 [2022-02-09 03:53:12,891 INFO L226 Difference]: Without dead ends: 3281 [2022-02-09 03:53:12,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:53:12,892 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 381 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:12,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1294 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:53:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-02-09 03:53:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1844. [2022-02-09 03:53:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 2.921323928377645) internal successors, (5384), 1843 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 5384 transitions. [2022-02-09 03:53:12,920 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 5384 transitions. Word has length 33 [2022-02-09 03:53:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:12,920 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 5384 transitions. [2022-02-09 03:53:12,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 5384 transitions. [2022-02-09 03:53:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:12,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:12,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:12,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:13,122 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,SelfDestructingSolverStorable41 [2022-02-09 03:53:13,123 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -165530045, now seen corresponding path program 40 times [2022-02-09 03:53:13,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:13,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277005052] [2022-02-09 03:53:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:13,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:13,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:13,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277005052] [2022-02-09 03:53:13,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277005052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:13,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688241720] [2022-02-09 03:53:13,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:53:13,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:13,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:13,393 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) [2022-02-09 03:53:13,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-09 03:53:13,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:53:13,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:13,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:13,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:13,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:14,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688241720] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:14,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:14,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:53:14,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816608189] [2022-02-09 03:53:14,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:14,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:14,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:14,187 INFO L87 Difference]: Start difference. First operand 1844 states and 5384 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:15,404 INFO L93 Difference]: Finished difference Result 3161 states and 9104 transitions. [2022-02-09 03:53:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:15,410 INFO L225 Difference]: With dead ends: 3161 [2022-02-09 03:53:15,410 INFO L226 Difference]: Without dead ends: 3142 [2022-02-09 03:53:15,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:53:15,411 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 421 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:15,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1230 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2022-02-09 03:53:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 1856. [2022-02-09 03:53:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 2.922911051212938) internal successors, (5422), 1855 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 5422 transitions. [2022-02-09 03:53:15,434 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 5422 transitions. Word has length 33 [2022-02-09 03:53:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:15,434 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 5422 transitions. [2022-02-09 03:53:15,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 5422 transitions. [2022-02-09 03:53:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:15,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:15,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:15,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:15,637 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,SelfDestructingSolverStorable42 [2022-02-09 03:53:15,637 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash 710652419, now seen corresponding path program 41 times [2022-02-09 03:53:15,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:15,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616039478] [2022-02-09 03:53:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:15,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:15,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:15,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616039478] [2022-02-09 03:53:15,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616039478] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:15,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898968525] [2022-02-09 03:53:15,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:53:15,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:15,845 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) [2022-02-09 03:53:15,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-09 03:53:15,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:15,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:15,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:16,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:16,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898968525] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:16,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:16,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:53:16,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351522756] [2022-02-09 03:53:16,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:16,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:16,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:16,681 INFO L87 Difference]: Start difference. First operand 1856 states and 5422 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:18,047 INFO L93 Difference]: Finished difference Result 2754 states and 7938 transitions. [2022-02-09 03:53:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:18,052 INFO L225 Difference]: With dead ends: 2754 [2022-02-09 03:53:18,052 INFO L226 Difference]: Without dead ends: 2739 [2022-02-09 03:53:18,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:53:18,053 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 440 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:18,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1516 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1567 Invalid, 0 Unknown, 142 Unchecked, 0.6s Time] [2022-02-09 03:53:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-02-09 03:53:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 1852. [2022-02-09 03:53:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 2.921663965424095) internal successors, (5408), 1851 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 5408 transitions. [2022-02-09 03:53:18,079 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 5408 transitions. Word has length 33 [2022-02-09 03:53:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:18,079 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 5408 transitions. [2022-02-09 03:53:18,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 5408 transitions. [2022-02-09 03:53:18,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:18,081 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:18,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:18,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:18,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:18,282 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -23814905, now seen corresponding path program 42 times [2022-02-09 03:53:18,282 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:18,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232573308] [2022-02-09 03:53:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:18,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:18,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:18,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232573308] [2022-02-09 03:53:18,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232573308] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:18,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881126007] [2022-02-09 03:53:18,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:53:18,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:18,513 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) [2022-02-09 03:53:18,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-09 03:53:18,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:53:18,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:18,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:18,739 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 5 treesize of output 3 [2022-02-09 03:53:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:18,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:19,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881126007] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:19,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:19,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:53:19,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513523172] [2022-02-09 03:53:19,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:19,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:19,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:19,399 INFO L87 Difference]: Start difference. First operand 1852 states and 5408 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:20,705 INFO L93 Difference]: Finished difference Result 3491 states and 10010 transitions. [2022-02-09 03:53:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-09 03:53:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:20,712 INFO L225 Difference]: With dead ends: 3491 [2022-02-09 03:53:20,712 INFO L226 Difference]: Without dead ends: 3476 [2022-02-09 03:53:20,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 03:53:20,713 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 483 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:20,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 1358 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-02-09 03:53:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 1867. [2022-02-09 03:53:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 2.9217577706323685) internal successors, (5452), 1866 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 5452 transitions. [2022-02-09 03:53:20,745 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 5452 transitions. Word has length 33 [2022-02-09 03:53:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:20,746 INFO L470 AbstractCegarLoop]: Abstraction has 1867 states and 5452 transitions. [2022-02-09 03:53:20,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 5452 transitions. [2022-02-09 03:53:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:20,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:20,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:20,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:20,949 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1306962365, now seen corresponding path program 43 times [2022-02-09 03:53:20,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:20,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626246103] [2022-02-09 03:53:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:21,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:21,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626246103] [2022-02-09 03:53:21,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626246103] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:21,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208887589] [2022-02-09 03:53:21,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:53:21,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:21,174 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) [2022-02-09 03:53:21,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-09 03:53:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:21,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:21,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:21,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:21,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208887589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:21,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:21,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-09 03:53:21,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638199344] [2022-02-09 03:53:21,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:21,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:53:21,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:53:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:53:21,998 INFO L87 Difference]: Start difference. First operand 1867 states and 5452 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:23,350 INFO L93 Difference]: Finished difference Result 3807 states and 10798 transitions. [2022-02-09 03:53:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 03:53:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:23,357 INFO L225 Difference]: With dead ends: 3807 [2022-02-09 03:53:23,357 INFO L226 Difference]: Without dead ends: 3792 [2022-02-09 03:53:23,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=1989, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 03:53:23,358 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 468 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:23,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1617 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:53:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2022-02-09 03:53:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 1847. [2022-02-09 03:53:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 2.9209100758396533) internal successors, (5392), 1846 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 5392 transitions. [2022-02-09 03:53:23,399 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 5392 transitions. Word has length 33 [2022-02-09 03:53:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:23,399 INFO L470 AbstractCegarLoop]: Abstraction has 1847 states and 5392 transitions. [2022-02-09 03:53:23,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 5392 transitions. [2022-02-09 03:53:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:23,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:23,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:23,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:23,602 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,SelfDestructingSolverStorable45 [2022-02-09 03:53:23,602 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1023381209, now seen corresponding path program 44 times [2022-02-09 03:53:23,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:23,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533465742] [2022-02-09 03:53:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:23,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:23,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:23,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533465742] [2022-02-09 03:53:23,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533465742] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:23,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129565337] [2022-02-09 03:53:23,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:53:23,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:23,819 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) [2022-02-09 03:53:23,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-09 03:53:23,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:23,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:23,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:53:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:24,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:24,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129565337] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:24,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:24,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-09 03:53:24,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086245709] [2022-02-09 03:53:24,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:24,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:53:24,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:24,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:53:24,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:53:24,702 INFO L87 Difference]: Start difference. First operand 1847 states and 5392 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:25,648 INFO L93 Difference]: Finished difference Result 3342 states and 9620 transitions. [2022-02-09 03:53:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:53:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:25,653 INFO L225 Difference]: With dead ends: 3342 [2022-02-09 03:53:25,653 INFO L226 Difference]: Without dead ends: 3327 [2022-02-09 03:53:25,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:53:25,656 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 412 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:25,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 983 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 03:53:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-02-09 03:53:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 1931. [2022-02-09 03:53:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.9098445595854923) internal successors, (5616), 1930 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5616 transitions. [2022-02-09 03:53:25,697 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5616 transitions. Word has length 33 [2022-02-09 03:53:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:25,697 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5616 transitions. [2022-02-09 03:53:25,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5616 transitions. [2022-02-09 03:53:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:25,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:25,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:25,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:25,899 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,SelfDestructingSolverStorable46 [2022-02-09 03:53:25,900 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1059014257, now seen corresponding path program 45 times [2022-02-09 03:53:25,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:25,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4445903] [2022-02-09 03:53:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:25,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:26,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:26,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4445903] [2022-02-09 03:53:26,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4445903] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:26,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432190617] [2022-02-09 03:53:26,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:53:26,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:26,100 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) [2022-02-09 03:53:26,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-09 03:53:26,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:53:26,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:26,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:26,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:26,321 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 5 treesize of output 3 [2022-02-09 03:53:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:26,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:27,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432190617] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:27,019 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:27,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-09 03:53:27,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742515375] [2022-02-09 03:53:27,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:27,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:53:27,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:53:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:53:27,020 INFO L87 Difference]: Start difference. First operand 1931 states and 5616 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:28,349 INFO L93 Difference]: Finished difference Result 2954 states and 8432 transitions. [2022-02-09 03:53:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:28,354 INFO L225 Difference]: With dead ends: 2954 [2022-02-09 03:53:28,354 INFO L226 Difference]: Without dead ends: 2939 [2022-02-09 03:53:28,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:53:28,355 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 451 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:28,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1098 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:53:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-02-09 03:53:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1994. [2022-02-09 03:53:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.912694430506774) internal successors, (5805), 1993 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5805 transitions. [2022-02-09 03:53:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 5805 transitions. Word has length 33 [2022-02-09 03:53:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:28,381 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 5805 transitions. [2022-02-09 03:53:28,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 5805 transitions. [2022-02-09 03:53:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:28,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:28,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:28,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:28,583 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,SelfDestructingSolverStorable47 [2022-02-09 03:53:28,584 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1287773101, now seen corresponding path program 46 times [2022-02-09 03:53:28,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:28,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894039770] [2022-02-09 03:53:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:28,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:28,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:28,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894039770] [2022-02-09 03:53:28,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894039770] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:28,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523311067] [2022-02-09 03:53:28,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:53:28,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:28,795 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) [2022-02-09 03:53:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-09 03:53:28,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:53:28,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:28,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:28,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:29,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:29,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523311067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:29,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:29,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:53:29,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754953985] [2022-02-09 03:53:29,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:29,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:29,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:29,615 INFO L87 Difference]: Start difference. First operand 1994 states and 5805 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:30,722 INFO L93 Difference]: Finished difference Result 3279 states and 9420 transitions. [2022-02-09 03:53:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:30,728 INFO L225 Difference]: With dead ends: 3279 [2022-02-09 03:53:30,728 INFO L226 Difference]: Without dead ends: 3264 [2022-02-09 03:53:30,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:53:30,729 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 415 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:30,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1149 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:53:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-02-09 03:53:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 1973. [2022-02-09 03:53:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.9046653144016226) internal successors, (5728), 1972 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 5728 transitions. [2022-02-09 03:53:30,755 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 5728 transitions. Word has length 33 [2022-02-09 03:53:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:30,756 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 5728 transitions. [2022-02-09 03:53:30,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 5728 transitions. [2022-02-09 03:53:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:30,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:30,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:30,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-09 03:53:30,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:30,969 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2060462395, now seen corresponding path program 47 times [2022-02-09 03:53:30,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:30,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453453845] [2022-02-09 03:53:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:30,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:31,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:31,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453453845] [2022-02-09 03:53:31,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453453845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:31,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707809354] [2022-02-09 03:53:31,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:53:31,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:31,211 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) [2022-02-09 03:53:31,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-09 03:53:31,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:31,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:31,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:32,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707809354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:32,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:32,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-09 03:53:32,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750968696] [2022-02-09 03:53:32,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:32,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:53:32,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:53:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:53:32,056 INFO L87 Difference]: Start difference. First operand 1973 states and 5728 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:33,166 INFO L93 Difference]: Finished difference Result 3659 states and 10458 transitions. [2022-02-09 03:53:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-09 03:53:33,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:33,172 INFO L225 Difference]: With dead ends: 3659 [2022-02-09 03:53:33,172 INFO L226 Difference]: Without dead ends: 3629 [2022-02-09 03:53:33,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=1727, Unknown=0, NotChecked=0, Total=2070 [2022-02-09 03:53:33,172 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 416 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:33,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1364 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1270 Invalid, 0 Unknown, 334 Unchecked, 0.5s Time] [2022-02-09 03:53:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2022-02-09 03:53:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 1994. [2022-02-09 03:53:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.902157551430005) internal successors, (5784), 1993 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5784 transitions. [2022-02-09 03:53:33,199 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 5784 transitions. Word has length 33 [2022-02-09 03:53:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:33,200 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 5784 transitions. [2022-02-09 03:53:33,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 5784 transitions. [2022-02-09 03:53:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:33,202 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:33,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:33,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:33,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-09 03:53:33,403 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1906024877, now seen corresponding path program 48 times [2022-02-09 03:53:33,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:33,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876988471] [2022-02-09 03:53:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:33,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:33,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:33,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876988471] [2022-02-09 03:53:33,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876988471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:33,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874474293] [2022-02-09 03:53:33,616 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:53:33,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:33,617 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) [2022-02-09 03:53:33,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-09 03:53:33,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:53:33,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:33,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:33,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:33,829 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 5 treesize of output 3 [2022-02-09 03:53:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:34,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:34,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874474293] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:34,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:34,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:53:34,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484851435] [2022-02-09 03:53:34,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:34,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:34,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:34,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:34,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:34,555 INFO L87 Difference]: Start difference. First operand 1994 states and 5784 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:35,754 INFO L93 Difference]: Finished difference Result 3541 states and 10148 transitions. [2022-02-09 03:53:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-09 03:53:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:35,759 INFO L225 Difference]: With dead ends: 3541 [2022-02-09 03:53:35,760 INFO L226 Difference]: Without dead ends: 3526 [2022-02-09 03:53:35,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:53:35,760 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 351 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:35,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1448 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-02-09 03:53:35,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 1889. [2022-02-09 03:53:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.9152542372881354) internal successors, (5504), 1888 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5504 transitions. [2022-02-09 03:53:35,789 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5504 transitions. Word has length 33 [2022-02-09 03:53:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5504 transitions. [2022-02-09 03:53:35,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5504 transitions. [2022-02-09 03:53:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:35,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:35,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:35,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:35,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:35,992 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash -493544957, now seen corresponding path program 49 times [2022-02-09 03:53:35,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:35,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798472032] [2022-02-09 03:53:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:35,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:36,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:36,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798472032] [2022-02-09 03:53:36,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798472032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:36,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899888704] [2022-02-09 03:53:36,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:53:36,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:36,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:36,180 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) [2022-02-09 03:53:36,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-09 03:53:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:36,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:36,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:36,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:37,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899888704] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:37,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:37,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-09 03:53:37,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747190824] [2022-02-09 03:53:37,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:37,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:37,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:37,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:37,031 INFO L87 Difference]: Start difference. First operand 1889 states and 5504 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:38,515 INFO L93 Difference]: Finished difference Result 2759 states and 7953 transitions. [2022-02-09 03:53:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:38,520 INFO L225 Difference]: With dead ends: 2759 [2022-02-09 03:53:38,520 INFO L226 Difference]: Without dead ends: 2740 [2022-02-09 03:53:38,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:53:38,522 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 403 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:38,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1355 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-02-09 03:53:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1915. [2022-02-09 03:53:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 2.9221525600835947) internal successors, (5593), 1914 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 5593 transitions. [2022-02-09 03:53:38,554 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 5593 transitions. Word has length 33 [2022-02-09 03:53:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:38,554 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 5593 transitions. [2022-02-09 03:53:38,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 5593 transitions. [2022-02-09 03:53:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:38,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:38,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:38,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:38,757 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,SelfDestructingSolverStorable51 [2022-02-09 03:53:38,757 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash 382637507, now seen corresponding path program 50 times [2022-02-09 03:53:38,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:38,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631183700] [2022-02-09 03:53:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:38,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:38,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:38,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631183700] [2022-02-09 03:53:38,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631183700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:38,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474363901] [2022-02-09 03:53:38,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:53:38,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:38,968 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) [2022-02-09 03:53:38,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-09 03:53:38,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:38,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:38,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:38,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:39,177 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 5 treesize of output 3 [2022-02-09 03:53:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:39,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:39,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474363901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:39,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:39,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:53:39,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842360861] [2022-02-09 03:53:39,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:39,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:39,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:39,949 INFO L87 Difference]: Start difference. First operand 1915 states and 5593 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:41,519 INFO L93 Difference]: Finished difference Result 2759 states and 7947 transitions. [2022-02-09 03:53:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:41,525 INFO L225 Difference]: With dead ends: 2759 [2022-02-09 03:53:41,525 INFO L226 Difference]: Without dead ends: 2744 [2022-02-09 03:53:41,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:53:41,525 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 442 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:41,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1515 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:53:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-02-09 03:53:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1911. [2022-02-09 03:53:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 2.9209424083769635) internal successors, (5579), 1910 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 5579 transitions. [2022-02-09 03:53:41,573 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 5579 transitions. Word has length 33 [2022-02-09 03:53:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:41,573 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 5579 transitions. [2022-02-09 03:53:41,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 5579 transitions. [2022-02-09 03:53:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:41,576 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:41,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:41,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-09 03:53:41,792 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,SelfDestructingSolverStorable52 [2022-02-09 03:53:41,792 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1720498621, now seen corresponding path program 51 times [2022-02-09 03:53:41,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:41,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156107192] [2022-02-09 03:53:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:41,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:41,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:41,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156107192] [2022-02-09 03:53:41,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156107192] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:41,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824291351] [2022-02-09 03:53:41,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:53:41,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:41,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:41,965 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) [2022-02-09 03:53:41,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-09 03:53:42,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:53:42,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:42,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-09 03:53:42,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:42,182 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 5 treesize of output 3 [2022-02-09 03:53:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:42,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:42,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824291351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:42,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:42,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:53:42,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647106020] [2022-02-09 03:53:42,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:42,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:42,858 INFO L87 Difference]: Start difference. First operand 1911 states and 5579 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:44,045 INFO L93 Difference]: Finished difference Result 2931 states and 8523 transitions. [2022-02-09 03:53:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 03:53:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:44,050 INFO L225 Difference]: With dead ends: 2931 [2022-02-09 03:53:44,050 INFO L226 Difference]: Without dead ends: 2912 [2022-02-09 03:53:44,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:53:44,050 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 328 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:44,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1436 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2022-02-09 03:53:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1933. [2022-02-09 03:53:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 2.9151138716356106) internal successors, (5632), 1932 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5632 transitions. [2022-02-09 03:53:44,078 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5632 transitions. Word has length 33 [2022-02-09 03:53:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:44,078 INFO L470 AbstractCegarLoop]: Abstraction has 1933 states and 5632 transitions. [2022-02-09 03:53:44,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5632 transitions. [2022-02-09 03:53:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:44,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:44,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:44,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:44,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:44,281 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 741551271, now seen corresponding path program 52 times [2022-02-09 03:53:44,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:44,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953385054] [2022-02-09 03:53:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:44,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:44,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:44,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953385054] [2022-02-09 03:53:44,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953385054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:44,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59386463] [2022-02-09 03:53:44,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:53:44,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:44,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:44,458 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) [2022-02-09 03:53:44,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-09 03:53:44,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:53:44,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:44,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:44,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:44,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:45,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59386463] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:45,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:45,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-09 03:53:45,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721912586] [2022-02-09 03:53:45,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:45,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:45,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:45,264 INFO L87 Difference]: Start difference. First operand 1933 states and 5632 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:46,231 INFO L93 Difference]: Finished difference Result 2957 states and 8574 transitions. [2022-02-09 03:53:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 03:53:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:46,236 INFO L225 Difference]: With dead ends: 2957 [2022-02-09 03:53:46,236 INFO L226 Difference]: Without dead ends: 2942 [2022-02-09 03:53:46,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 03:53:46,237 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 341 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:46,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 990 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:53:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2022-02-09 03:53:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1911. [2022-02-09 03:53:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 2.9209424083769635) internal successors, (5579), 1910 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 5579 transitions. [2022-02-09 03:53:46,261 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 5579 transitions. Word has length 33 [2022-02-09 03:53:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:46,261 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 5579 transitions. [2022-02-09 03:53:46,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 5579 transitions. [2022-02-09 03:53:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:46,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:46,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:46,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-09 03:53:46,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-09 03:53:46,473 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -114396377, now seen corresponding path program 53 times [2022-02-09 03:53:46,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:46,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934555805] [2022-02-09 03:53:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:46,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:46,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:46,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934555805] [2022-02-09 03:53:46,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934555805] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:46,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95426091] [2022-02-09 03:53:46,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:53:46,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:46,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:46,662 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) [2022-02-09 03:53:46,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-09 03:53:46,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:46,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:46,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:47,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:47,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95426091] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:47,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:47,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-09 03:53:47,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230158497] [2022-02-09 03:53:47,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:47,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:53:47,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:53:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:53:47,565 INFO L87 Difference]: Start difference. First operand 1911 states and 5579 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:48,961 INFO L93 Difference]: Finished difference Result 2866 states and 8198 transitions. [2022-02-09 03:53:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:48,966 INFO L225 Difference]: With dead ends: 2866 [2022-02-09 03:53:48,966 INFO L226 Difference]: Without dead ends: 2851 [2022-02-09 03:53:48,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=348, Invalid=1632, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:53:48,967 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 496 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:48,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1178 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-02-09 03:53:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1932. [2022-02-09 03:53:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.9290523045054377) internal successors, (5656), 1931 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5656 transitions. [2022-02-09 03:53:48,992 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5656 transitions. Word has length 33 [2022-02-09 03:53:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:48,992 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5656 transitions. [2022-02-09 03:53:48,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5656 transitions. [2022-02-09 03:53:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:48,994 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:48,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:49,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:49,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-09 03:53:49,195 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1780794963, now seen corresponding path program 54 times [2022-02-09 03:53:49,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:49,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754937935] [2022-02-09 03:53:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:49,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:49,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:49,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754937935] [2022-02-09 03:53:49,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754937935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:49,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406002942] [2022-02-09 03:53:49,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:53:49,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:49,373 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) [2022-02-09 03:53:49,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-09 03:53:49,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 03:53:49,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:49,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:53:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:49,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:50,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406002942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:50,291 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:50,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:53:50,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762897403] [2022-02-09 03:53:50,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:50,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:53:50,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:53:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:53:50,292 INFO L87 Difference]: Start difference. First operand 1932 states and 5656 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:51,779 INFO L93 Difference]: Finished difference Result 2837 states and 8133 transitions. [2022-02-09 03:53:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:53:51,779 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:51,784 INFO L225 Difference]: With dead ends: 2837 [2022-02-09 03:53:51,784 INFO L226 Difference]: Without dead ends: 2822 [2022-02-09 03:53:51,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=381, Invalid=1971, Unknown=0, NotChecked=0, Total=2352 [2022-02-09 03:53:51,784 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 436 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:51,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1306 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:53:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-02-09 03:53:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1900. [2022-02-09 03:53:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.9152185360716167) internal successors, (5536), 1899 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5536 transitions. [2022-02-09 03:53:51,825 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5536 transitions. Word has length 33 [2022-02-09 03:53:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:51,825 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5536 transitions. [2022-02-09 03:53:51,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5536 transitions. [2022-02-09 03:53:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:51,827 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:51,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:51,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-09 03:53:52,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:52,028 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1628011223, now seen corresponding path program 55 times [2022-02-09 03:53:52,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:52,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224472388] [2022-02-09 03:53:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:52,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:52,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:52,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224472388] [2022-02-09 03:53:52,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224472388] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:52,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041192894] [2022-02-09 03:53:52,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:53:52,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:52,210 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) [2022-02-09 03:53:52,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-09 03:53:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:52,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:53:52,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:52,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:53,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041192894] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:53,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:53,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-09 03:53:53,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215661611] [2022-02-09 03:53:53,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:53,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:53:53,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:53:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:53:53,058 INFO L87 Difference]: Start difference. First operand 1900 states and 5536 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:54,459 INFO L93 Difference]: Finished difference Result 3262 states and 9418 transitions. [2022-02-09 03:53:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-09 03:53:54,459 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:53:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:54,464 INFO L225 Difference]: With dead ends: 3262 [2022-02-09 03:53:54,464 INFO L226 Difference]: Without dead ends: 3243 [2022-02-09 03:53:54,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2022-02-09 03:53:54,465 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 471 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:54,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1464 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:53:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2022-02-09 03:53:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 1908. [2022-02-09 03:53:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.916622968012585) internal successors, (5562), 1907 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5562 transitions. [2022-02-09 03:53:54,490 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5562 transitions. Word has length 33 [2022-02-09 03:53:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:54,490 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5562 transitions. [2022-02-09 03:53:54,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5562 transitions. [2022-02-09 03:53:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:54,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:54,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:54,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-09 03:53:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:54,707 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1790773609, now seen corresponding path program 56 times [2022-02-09 03:53:54,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:54,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210073544] [2022-02-09 03:53:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:54,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:54,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:54,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210073544] [2022-02-09 03:53:54,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210073544] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:54,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351602071] [2022-02-09 03:53:54,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:53:54,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:54,907 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) [2022-02-09 03:53:54,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-09 03:53:54,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:53:54,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:54,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:54,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:55,150 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 5 treesize of output 3 [2022-02-09 03:53:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:55,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:55,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351602071] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:55,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:55,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:53:55,973 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873166349] [2022-02-09 03:53:55,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:55,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:53:55,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:53:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:53:55,973 INFO L87 Difference]: Start difference. First operand 1908 states and 5562 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:53:57,793 INFO L93 Difference]: Finished difference Result 2917 states and 8390 transitions. [2022-02-09 03:53:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-09 03:53:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:53:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:53:57,798 INFO L225 Difference]: With dead ends: 2917 [2022-02-09 03:53:57,798 INFO L226 Difference]: Without dead ends: 2887 [2022-02-09 03:53:57,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=2394, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:53:57,798 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 470 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:53:57,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1791 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:53:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-02-09 03:53:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1900. [2022-02-09 03:53:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.9152185360716167) internal successors, (5536), 1899 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5536 transitions. [2022-02-09 03:53:57,824 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5536 transitions. Word has length 33 [2022-02-09 03:53:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:53:57,824 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5536 transitions. [2022-02-09 03:53:57,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:53:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5536 transitions. [2022-02-09 03:53:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:53:57,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:53:57,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:53:57,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-09 03:53:58,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:58,045 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:53:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:53:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -516801493, now seen corresponding path program 57 times [2022-02-09 03:53:58,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:53:58,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296276290] [2022-02-09 03:53:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:53:58,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:53:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:53:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:58,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:53:58,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296276290] [2022-02-09 03:53:58,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296276290] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:53:58,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736992810] [2022-02-09 03:53:58,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:53:58,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:53:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:53:58,242 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) [2022-02-09 03:53:58,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-09 03:53:58,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:53:58,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:53:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:53:58,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:53:58,443 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 5 treesize of output 3 [2022-02-09 03:53:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:58,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:53:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:53:59,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736992810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:53:59,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:53:59,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:53:59,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265917357] [2022-02-09 03:53:59,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:53:59,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:53:59,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:53:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:53:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:53:59,207 INFO L87 Difference]: Start difference. First operand 1900 states and 5536 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:00,902 INFO L93 Difference]: Finished difference Result 3064 states and 8742 transitions. [2022-02-09 03:54:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-09 03:54:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:00,907 INFO L225 Difference]: With dead ends: 3064 [2022-02-09 03:54:00,907 INFO L226 Difference]: Without dead ends: 3034 [2022-02-09 03:54:00,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=2394, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:54:00,907 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 570 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:00,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 1448 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2022-02-09 03:54:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1942. [2022-02-09 03:54:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.9206594538897477) internal successors, (5669), 1941 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5669 transitions. [2022-02-09 03:54:00,933 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5669 transitions. Word has length 33 [2022-02-09 03:54:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:00,933 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5669 transitions. [2022-02-09 03:54:00,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5669 transitions. [2022-02-09 03:54:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:00,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:00,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:00,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-09 03:54:01,135 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,SelfDestructingSolverStorable59 [2022-02-09 03:54:01,136 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:01,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2111767217, now seen corresponding path program 58 times [2022-02-09 03:54:01,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:01,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177992360] [2022-02-09 03:54:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:01,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:01,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:01,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177992360] [2022-02-09 03:54:01,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177992360] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:01,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160500067] [2022-02-09 03:54:01,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:54:01,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:01,334 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) [2022-02-09 03:54:01,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-09 03:54:01,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:54:01,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:01,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:01,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:01,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:02,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160500067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:02,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:02,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-09 03:54:02,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787494295] [2022-02-09 03:54:02,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:02,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:54:02,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:54:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:54:02,183 INFO L87 Difference]: Start difference. First operand 1942 states and 5669 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:03,452 INFO L93 Difference]: Finished difference Result 3338 states and 9597 transitions. [2022-02-09 03:54:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:54:03,452 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:03,457 INFO L225 Difference]: With dead ends: 3338 [2022-02-09 03:54:03,458 INFO L226 Difference]: Without dead ends: 3323 [2022-02-09 03:54:03,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:54:03,458 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 449 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:03,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1292 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-02-09 03:54:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 1889. [2022-02-09 03:54:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.9152542372881354) internal successors, (5504), 1888 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5504 transitions. [2022-02-09 03:54:03,487 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5504 transitions. Word has length 33 [2022-02-09 03:54:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:03,487 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5504 transitions. [2022-02-09 03:54:03,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5504 transitions. [2022-02-09 03:54:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:03,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:03,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:03,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-09 03:54:03,690 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,SelfDestructingSolverStorable60 [2022-02-09 03:54:03,690 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:03,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 689886501, now seen corresponding path program 59 times [2022-02-09 03:54:03,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:03,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042556254] [2022-02-09 03:54:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:03,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:03,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:03,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042556254] [2022-02-09 03:54:03,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042556254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:03,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135538046] [2022-02-09 03:54:03,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:54:03,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:03,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:03,878 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) [2022-02-09 03:54:03,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-09 03:54:03,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:03,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:03,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:03,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:04,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:04,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135538046] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:04,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:04,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-09 03:54:04,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274842837] [2022-02-09 03:54:04,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:04,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:54:04,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:54:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:54:04,736 INFO L87 Difference]: Start difference. First operand 1889 states and 5504 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:06,254 INFO L93 Difference]: Finished difference Result 3761 states and 10682 transitions. [2022-02-09 03:54:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-09 03:54:06,254 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:06,260 INFO L225 Difference]: With dead ends: 3761 [2022-02-09 03:54:06,260 INFO L226 Difference]: Without dead ends: 3742 [2022-02-09 03:54:06,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2022-02-09 03:54:06,261 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 530 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:06,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1300 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-02-09 03:54:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 1893. [2022-02-09 03:54:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 2.916490486257928) internal successors, (5518), 1892 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 5518 transitions. [2022-02-09 03:54:06,301 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 5518 transitions. Word has length 33 [2022-02-09 03:54:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 1893 states and 5518 transitions. [2022-02-09 03:54:06,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 5518 transitions. [2022-02-09 03:54:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:06,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:06,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:06,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:06,537 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,SelfDestructingSolverStorable61 [2022-02-09 03:54:06,537 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:06,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1566068965, now seen corresponding path program 60 times [2022-02-09 03:54:06,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:06,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488460902] [2022-02-09 03:54:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:06,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:06,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:06,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488460902] [2022-02-09 03:54:06,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488460902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:06,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520230531] [2022-02-09 03:54:06,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:54:06,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:06,723 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) [2022-02-09 03:54:06,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-09 03:54:06,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:54:06,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:06,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:06,937 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 5 treesize of output 3 [2022-02-09 03:54:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:07,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520230531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:07,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:07,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:54:07,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416808398] [2022-02-09 03:54:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:07,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:07,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:07,728 INFO L87 Difference]: Start difference. First operand 1893 states and 5518 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:09,884 INFO L93 Difference]: Finished difference Result 3262 states and 9279 transitions. [2022-02-09 03:54:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 03:54:09,884 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:09,890 INFO L225 Difference]: With dead ends: 3262 [2022-02-09 03:54:09,890 INFO L226 Difference]: Without dead ends: 3247 [2022-02-09 03:54:09,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=556, Invalid=3104, Unknown=0, NotChecked=0, Total=3660 [2022-02-09 03:54:09,891 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 620 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:09,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1579 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:54:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-02-09 03:54:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 1881. [2022-02-09 03:54:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 2.9148936170212765) internal successors, (5480), 1880 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 5480 transitions. [2022-02-09 03:54:09,923 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 5480 transitions. Word has length 33 [2022-02-09 03:54:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:09,923 INFO L470 AbstractCegarLoop]: Abstraction has 1881 states and 5480 transitions. [2022-02-09 03:54:09,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 5480 transitions. [2022-02-09 03:54:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:09,925 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:09,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:09,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:10,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:10,142 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1694496615, now seen corresponding path program 61 times [2022-02-09 03:54:10,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:10,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257151763] [2022-02-09 03:54:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:10,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:10,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:10,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257151763] [2022-02-09 03:54:10,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257151763] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:10,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371139481] [2022-02-09 03:54:10,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:54:10,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:10,331 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) [2022-02-09 03:54:10,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-09 03:54:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:10,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:10,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:10,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:11,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371139481] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:11,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:11,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-09 03:54:11,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334135185] [2022-02-09 03:54:11,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:11,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 03:54:11,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 03:54:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-02-09 03:54:11,218 INFO L87 Difference]: Start difference. First operand 1881 states and 5480 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:13,078 INFO L93 Difference]: Finished difference Result 3091 states and 8783 transitions. [2022-02-09 03:54:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:54:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:13,084 INFO L225 Difference]: With dead ends: 3091 [2022-02-09 03:54:13,084 INFO L226 Difference]: Without dead ends: 3076 [2022-02-09 03:54:13,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=411, Invalid=2241, Unknown=0, NotChecked=0, Total=2652 [2022-02-09 03:54:13,085 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 469 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:13,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1794 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:54:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-02-09 03:54:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1902. [2022-02-09 03:54:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 2.923198316675434) internal successors, (5557), 1901 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 5557 transitions. [2022-02-09 03:54:13,111 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 5557 transitions. Word has length 33 [2022-02-09 03:54:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:13,112 INFO L470 AbstractCegarLoop]: Abstraction has 1902 states and 5557 transitions. [2022-02-09 03:54:13,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 5557 transitions. [2022-02-09 03:54:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:13,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:13,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:13,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-02-09 03:54:13,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:13,315 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 28098029, now seen corresponding path program 62 times [2022-02-09 03:54:13,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:13,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256222474] [2022-02-09 03:54:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:13,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:13,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256222474] [2022-02-09 03:54:13,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256222474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:13,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167096910] [2022-02-09 03:54:13,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:54:13,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:13,497 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) [2022-02-09 03:54:13,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-09 03:54:13,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:13,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:13,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:13,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:13,715 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 5 treesize of output 3 [2022-02-09 03:54:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:13,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:14,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167096910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:14,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:14,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:54:14,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383795265] [2022-02-09 03:54:14,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:14,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:14,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:14,457 INFO L87 Difference]: Start difference. First operand 1902 states and 5557 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:15,951 INFO L93 Difference]: Finished difference Result 3527 states and 10065 transitions. [2022-02-09 03:54:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 03:54:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:15,959 INFO L225 Difference]: With dead ends: 3527 [2022-02-09 03:54:15,959 INFO L226 Difference]: Without dead ends: 3512 [2022-02-09 03:54:15,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=2069, Unknown=0, NotChecked=0, Total=2450 [2022-02-09 03:54:15,960 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 522 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:15,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1592 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:54:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-02-09 03:54:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1784. [2022-02-09 03:54:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 2.9209197980931014) internal successors, (5208), 1783 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 5208 transitions. [2022-02-09 03:54:15,987 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 5208 transitions. Word has length 33 [2022-02-09 03:54:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:15,987 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 5208 transitions. [2022-02-09 03:54:15,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 5208 transitions. [2022-02-09 03:54:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:15,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:15,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:16,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:16,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-09 03:54:16,190 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1005542603, now seen corresponding path program 63 times [2022-02-09 03:54:16,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:16,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548095137] [2022-02-09 03:54:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:16,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:16,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:16,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548095137] [2022-02-09 03:54:16,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548095137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:54:16,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:54:16,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 03:54:16,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652618135] [2022-02-09 03:54:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:54:16,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 03:54:16,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 03:54:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:54:16,198 INFO L87 Difference]: Start difference. First operand 1784 states and 5208 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:16,213 INFO L93 Difference]: Finished difference Result 1474 states and 4216 transitions. [2022-02-09 03:54:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 03:54:16,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:16,215 INFO L225 Difference]: With dead ends: 1474 [2022-02-09 03:54:16,215 INFO L226 Difference]: Without dead ends: 1474 [2022-02-09 03:54:16,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 03:54:16,216 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:16,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:54:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-02-09 03:54:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2022-02-09 03:54:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 2.8621860149355056) internal successors, (4216), 1473 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4216 transitions. [2022-02-09 03:54:16,233 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4216 transitions. Word has length 33 [2022-02-09 03:54:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:16,233 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 4216 transitions. [2022-02-09 03:54:16,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4216 transitions. [2022-02-09 03:54:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:16,235 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:16,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:16,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-09 03:54:16,235 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1645279201, now seen corresponding path program 64 times [2022-02-09 03:54:16,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:16,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105334588] [2022-02-09 03:54:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:16,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:16,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105334588] [2022-02-09 03:54:16,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105334588] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461490548] [2022-02-09 03:54:16,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:54:16,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:16,423 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) [2022-02-09 03:54:16,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-09 03:54:16,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:54:16,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:16,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:16,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:16,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:17,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461490548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:17,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:17,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-09 03:54:17,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527187635] [2022-02-09 03:54:17,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:17,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:17,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:17,305 INFO L87 Difference]: Start difference. First operand 1474 states and 4216 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:18,306 INFO L93 Difference]: Finished difference Result 2806 states and 7869 transitions. [2022-02-09 03:54:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:18,311 INFO L225 Difference]: With dead ends: 2806 [2022-02-09 03:54:18,311 INFO L226 Difference]: Without dead ends: 2791 [2022-02-09 03:54:18,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=1520, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:54:18,312 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 396 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:18,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 1157 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-02-09 03:54:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1513. [2022-02-09 03:54:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 2.8624338624338623) internal successors, (4328), 1512 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 4328 transitions. [2022-02-09 03:54:18,332 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 4328 transitions. Word has length 33 [2022-02-09 03:54:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:18,333 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 4328 transitions. [2022-02-09 03:54:18,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 4328 transitions. [2022-02-09 03:54:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:18,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:18,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:18,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:18,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-09 03:54:18,535 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1880955999, now seen corresponding path program 65 times [2022-02-09 03:54:18,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:18,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843565437] [2022-02-09 03:54:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:18,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:18,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843565437] [2022-02-09 03:54:18,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843565437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:18,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398396804] [2022-02-09 03:54:18,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:54:18,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:18,794 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) [2022-02-09 03:54:18,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-09 03:54:18,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:18,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:18,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:18,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:19,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:19,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398396804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:19,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:19,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:54:19,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288163640] [2022-02-09 03:54:19,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:19,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:19,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:19,596 INFO L87 Difference]: Start difference. First operand 1513 states and 4328 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:20,736 INFO L93 Difference]: Finished difference Result 2697 states and 7578 transitions. [2022-02-09 03:54:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:20,741 INFO L225 Difference]: With dead ends: 2697 [2022-02-09 03:54:20,741 INFO L226 Difference]: Without dead ends: 2678 [2022-02-09 03:54:20,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:54:20,742 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 340 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:20,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1306 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-02-09 03:54:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1525. [2022-02-09 03:54:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 2.8648293963254594) internal successors, (4366), 1524 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4366 transitions. [2022-02-09 03:54:20,766 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4366 transitions. Word has length 33 [2022-02-09 03:54:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 4366 transitions. [2022-02-09 03:54:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4366 transitions. [2022-02-09 03:54:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:20,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:20,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:20,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:20,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:20,987 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1537828833, now seen corresponding path program 66 times [2022-02-09 03:54:20,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:20,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986019233] [2022-02-09 03:54:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:20,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:21,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:21,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986019233] [2022-02-09 03:54:21,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986019233] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:21,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067579818] [2022-02-09 03:54:21,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:54:21,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:21,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:21,189 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) [2022-02-09 03:54:21,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-09 03:54:21,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:54:21,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:21,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:21,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:21,427 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 5 treesize of output 3 [2022-02-09 03:54:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:21,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:22,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067579818] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:22,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:22,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-09 03:54:22,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326397597] [2022-02-09 03:54:22,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:22,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:54:22,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:54:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:54:22,088 INFO L87 Difference]: Start difference. First operand 1525 states and 4366 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:23,456 INFO L93 Difference]: Finished difference Result 2359 states and 6606 transitions. [2022-02-09 03:54:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:54:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:23,460 INFO L225 Difference]: With dead ends: 2359 [2022-02-09 03:54:23,460 INFO L226 Difference]: Without dead ends: 2344 [2022-02-09 03:54:23,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:54:23,461 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 360 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:23,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1297 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-02-09 03:54:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1521. [2022-02-09 03:54:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.863157894736842) internal successors, (4352), 1520 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4352 transitions. [2022-02-09 03:54:23,481 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4352 transitions. Word has length 33 [2022-02-09 03:54:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4352 transitions. [2022-02-09 03:54:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4352 transitions. [2022-02-09 03:54:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:23,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:23,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:23,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:23,699 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,SelfDestructingSolverStorable68 [2022-02-09 03:54:23,699 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2022671139, now seen corresponding path program 67 times [2022-02-09 03:54:23,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:23,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171077134] [2022-02-09 03:54:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:23,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:23,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:23,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171077134] [2022-02-09 03:54:23,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171077134] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:23,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280702777] [2022-02-09 03:54:23,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:54:23,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:23,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:23,890 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) [2022-02-09 03:54:23,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-09 03:54:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:23,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:23,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:24,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:24,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280702777] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:24,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:24,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-09 03:54:24,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358795242] [2022-02-09 03:54:24,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:24,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:24,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:24,732 INFO L87 Difference]: Start difference. First operand 1521 states and 4352 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:25,760 INFO L93 Difference]: Finished difference Result 3128 states and 8721 transitions. [2022-02-09 03:54:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-09 03:54:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:25,765 INFO L225 Difference]: With dead ends: 3128 [2022-02-09 03:54:25,765 INFO L226 Difference]: Without dead ends: 3098 [2022-02-09 03:54:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:54:25,765 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 462 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:25,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1219 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1252 Invalid, 0 Unknown, 164 Unchecked, 0.5s Time] [2022-02-09 03:54:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-02-09 03:54:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 1527. [2022-02-09 03:54:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8636959370904327) internal successors, (4370), 1526 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4370 transitions. [2022-02-09 03:54:25,786 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4370 transitions. Word has length 33 [2022-02-09 03:54:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:25,786 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4370 transitions. [2022-02-09 03:54:25,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4370 transitions. [2022-02-09 03:54:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:25,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:25,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:25,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-09 03:54:25,988 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,SelfDestructingSolverStorable69 [2022-02-09 03:54:25,989 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 739523679, now seen corresponding path program 68 times [2022-02-09 03:54:25,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:25,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843680353] [2022-02-09 03:54:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:25,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:26,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:26,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843680353] [2022-02-09 03:54:26,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843680353] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:26,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361634614] [2022-02-09 03:54:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:54:26,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:26,179 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) [2022-02-09 03:54:26,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-09 03:54:26,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:26,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:26,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:26,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:26,413 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 5 treesize of output 3 [2022-02-09 03:54:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:26,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:27,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361634614] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:27,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:27,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:54:27,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761916697] [2022-02-09 03:54:27,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:27,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:54:27,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:54:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:54:27,090 INFO L87 Difference]: Start difference. First operand 1527 states and 4370 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:28,524 INFO L93 Difference]: Finished difference Result 3264 states and 9075 transitions. [2022-02-09 03:54:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 03:54:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:28,529 INFO L225 Difference]: With dead ends: 3264 [2022-02-09 03:54:28,529 INFO L226 Difference]: Without dead ends: 3249 [2022-02-09 03:54:28,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806 [2022-02-09 03:54:28,530 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 380 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:28,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1739 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:54:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-02-09 03:54:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 1507. [2022-02-09 03:54:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 2.861885790172643) internal successors, (4310), 1506 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4310 transitions. [2022-02-09 03:54:28,552 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4310 transitions. Word has length 33 [2022-02-09 03:54:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:28,553 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 4310 transitions. [2022-02-09 03:54:28,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4310 transitions. [2022-02-09 03:54:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:28,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:28,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:28,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-09 03:54:28,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:28,755 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1023104835, now seen corresponding path program 69 times [2022-02-09 03:54:28,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:28,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497078683] [2022-02-09 03:54:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:28,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:28,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:28,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497078683] [2022-02-09 03:54:28,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497078683] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:28,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306074301] [2022-02-09 03:54:28,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:54:28,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:28,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:28,954 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) [2022-02-09 03:54:28,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-09 03:54:28,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:54:28,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:54:28,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:29,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:29,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306074301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:29,865 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:29,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:54:29,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054453351] [2022-02-09 03:54:29,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:29,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:54:29,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:54:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:54:29,866 INFO L87 Difference]: Start difference. First operand 1507 states and 4310 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:30,758 INFO L93 Difference]: Finished difference Result 2822 states and 7897 transitions. [2022-02-09 03:54:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:54:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:30,763 INFO L225 Difference]: With dead ends: 2822 [2022-02-09 03:54:30,763 INFO L226 Difference]: Without dead ends: 2807 [2022-02-09 03:54:30,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2022-02-09 03:54:30,764 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 394 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:30,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 928 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-02-09 03:54:30,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 1576. [2022-02-09 03:54:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 2.843809523809524) internal successors, (4479), 1575 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4479 transitions. [2022-02-09 03:54:30,787 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4479 transitions. Word has length 33 [2022-02-09 03:54:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:30,787 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 4479 transitions. [2022-02-09 03:54:30,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4479 transitions. [2022-02-09 03:54:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:30,789 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:30,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:30,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:30,990 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,SelfDestructingSolverStorable71 [2022-02-09 03:54:30,990 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 987471787, now seen corresponding path program 70 times [2022-02-09 03:54:30,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:30,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010306104] [2022-02-09 03:54:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:30,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:31,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:31,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010306104] [2022-02-09 03:54:31,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010306104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:31,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693241424] [2022-02-09 03:54:31,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:54:31,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:31,212 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) [2022-02-09 03:54:31,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-09 03:54:31,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:54:31,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:31,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:32,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693241424] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:32,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:32,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:54:32,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400614613] [2022-02-09 03:54:32,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:32,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:32,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:32,091 INFO L87 Difference]: Start difference. First operand 1576 states and 4479 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:33,331 INFO L93 Difference]: Finished difference Result 2350 states and 6557 transitions. [2022-02-09 03:54:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:33,335 INFO L225 Difference]: With dead ends: 2350 [2022-02-09 03:54:33,335 INFO L226 Difference]: Without dead ends: 2335 [2022-02-09 03:54:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=311, Invalid=1581, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:54:33,335 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 348 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:33,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1138 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-02-09 03:54:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 1594. [2022-02-09 03:54:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.8455743879472695) internal successors, (4533), 1593 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4533 transitions. [2022-02-09 03:54:33,354 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4533 transitions. Word has length 33 [2022-02-09 03:54:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:33,354 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 4533 transitions. [2022-02-09 03:54:33,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4533 transitions. [2022-02-09 03:54:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:33,356 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:33,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:33,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:33,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:33,557 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash 758712943, now seen corresponding path program 71 times [2022-02-09 03:54:33,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:33,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320476003] [2022-02-09 03:54:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:33,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:33,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:33,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320476003] [2022-02-09 03:54:33,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320476003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:33,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886678410] [2022-02-09 03:54:33,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:54:33,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:33,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:33,789 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) [2022-02-09 03:54:33,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-09 03:54:33,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:54:33,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:34,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:34,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886678410] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:34,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:34,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-09 03:54:34,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365784932] [2022-02-09 03:54:34,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:34,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:34,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:34,616 INFO L87 Difference]: Start difference. First operand 1594 states and 4533 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:35,626 INFO L93 Difference]: Finished difference Result 2684 states and 7527 transitions. [2022-02-09 03:54:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:35,631 INFO L225 Difference]: With dead ends: 2684 [2022-02-09 03:54:35,631 INFO L226 Difference]: Without dead ends: 2669 [2022-02-09 03:54:35,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:54:35,631 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 344 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:35,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1093 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-02-09 03:54:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1588. [2022-02-09 03:54:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 2.8424700693131695) internal successors, (4511), 1587 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 4511 transitions. [2022-02-09 03:54:35,651 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 4511 transitions. Word has length 33 [2022-02-09 03:54:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:35,651 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 4511 transitions. [2022-02-09 03:54:35,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 4511 transitions. [2022-02-09 03:54:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:35,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:35,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:35,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:35,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:35,854 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -188018857, now seen corresponding path program 72 times [2022-02-09 03:54:35,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:35,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048204360] [2022-02-09 03:54:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:36,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:36,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048204360] [2022-02-09 03:54:36,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048204360] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:36,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374130041] [2022-02-09 03:54:36,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:54:36,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:36,054 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) [2022-02-09 03:54:36,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-09 03:54:36,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:54:36,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:36,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:36,270 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 5 treesize of output 3 [2022-02-09 03:54:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:36,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:36,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374130041] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:36,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:36,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:54:36,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580321264] [2022-02-09 03:54:36,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:36,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:54:36,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:54:36,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:54:36,961 INFO L87 Difference]: Start difference. First operand 1588 states and 4511 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:37,955 INFO L93 Difference]: Finished difference Result 2841 states and 7944 transitions. [2022-02-09 03:54:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-09 03:54:37,955 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:37,960 INFO L225 Difference]: With dead ends: 2841 [2022-02-09 03:54:37,960 INFO L226 Difference]: Without dead ends: 2826 [2022-02-09 03:54:37,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2022-02-09 03:54:37,961 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 402 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:37,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 937 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-02-09 03:54:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1594. [2022-02-09 03:54:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.84180790960452) internal successors, (4527), 1593 states have internal predecessors, (4527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4527 transitions. [2022-02-09 03:54:37,983 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4527 transitions. Word has length 33 [2022-02-09 03:54:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:37,984 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 4527 transitions. [2022-02-09 03:54:37,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4527 transitions. [2022-02-09 03:54:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:37,985 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:37,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:38,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:38,186 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash -342456375, now seen corresponding path program 73 times [2022-02-09 03:54:38,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:38,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843150345] [2022-02-09 03:54:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:38,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:38,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:38,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843150345] [2022-02-09 03:54:38,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843150345] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:38,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558679685] [2022-02-09 03:54:38,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:54:38,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:38,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:38,378 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) [2022-02-09 03:54:38,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-09 03:54:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:38,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:38,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:38,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:39,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558679685] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:39,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:39,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-09 03:54:39,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578528156] [2022-02-09 03:54:39,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:39,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:39,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:39,234 INFO L87 Difference]: Start difference. First operand 1594 states and 4527 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:39,631 INFO L93 Difference]: Finished difference Result 2428 states and 6808 transitions. [2022-02-09 03:54:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 03:54:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:39,636 INFO L225 Difference]: With dead ends: 2428 [2022-02-09 03:54:39,636 INFO L226 Difference]: Without dead ends: 2422 [2022-02-09 03:54:39,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2022-02-09 03:54:39,637 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 344 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:39,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 834 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-02-09 03:54:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2022-02-09 03:54:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1614. [2022-02-09 03:54:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 2.8406695598264102) internal successors, (4582), 1613 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 4582 transitions. [2022-02-09 03:54:39,662 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 4582 transitions. Word has length 33 [2022-02-09 03:54:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:39,662 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 4582 transitions. [2022-02-09 03:54:39,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 4582 transitions. [2022-02-09 03:54:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:39,664 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:39,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:39,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-09 03:54:39,865 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -712460595, now seen corresponding path program 74 times [2022-02-09 03:54:39,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:39,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074952104] [2022-02-09 03:54:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:39,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:40,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:40,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074952104] [2022-02-09 03:54:40,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074952104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:40,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218553251] [2022-02-09 03:54:40,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:54:40,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:40,058 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) [2022-02-09 03:54:40,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-09 03:54:40,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:40,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:40,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:40,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:40,312 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 5 treesize of output 3 [2022-02-09 03:54:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:40,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:40,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218553251] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:40,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:40,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-09 03:54:40,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055577854] [2022-02-09 03:54:40,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:40,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:54:40,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:54:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:54:40,991 INFO L87 Difference]: Start difference. First operand 1614 states and 4582 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:42,234 INFO L93 Difference]: Finished difference Result 2986 states and 8329 transitions. [2022-02-09 03:54:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:54:42,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:42,239 INFO L225 Difference]: With dead ends: 2986 [2022-02-09 03:54:42,239 INFO L226 Difference]: Without dead ends: 2971 [2022-02-09 03:54:42,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:54:42,239 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 323 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:42,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1621 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:54:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-02-09 03:54:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1519. [2022-02-09 03:54:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.86034255599473) internal successors, (4342), 1518 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4342 transitions. [2022-02-09 03:54:42,261 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4342 transitions. Word has length 33 [2022-02-09 03:54:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:42,262 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4342 transitions. [2022-02-09 03:54:42,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4342 transitions. [2022-02-09 03:54:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:42,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:42,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:42,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-09 03:54:42,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:42,464 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1552941087, now seen corresponding path program 75 times [2022-02-09 03:54:42,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:42,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094096486] [2022-02-09 03:54:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:42,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:42,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:42,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094096486] [2022-02-09 03:54:42,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094096486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:42,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540207992] [2022-02-09 03:54:42,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:54:42,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:42,645 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) [2022-02-09 03:54:42,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-09 03:54:42,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:54:42,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:42,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:42,853 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 5 treesize of output 3 [2022-02-09 03:54:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:43,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:43,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540207992] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:43,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:43,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:54:43,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627748245] [2022-02-09 03:54:43,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:43,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:43,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:43,579 INFO L87 Difference]: Start difference. First operand 1519 states and 4342 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:44,906 INFO L93 Difference]: Finished difference Result 2182 states and 6153 transitions. [2022-02-09 03:54:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:44,907 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:44,910 INFO L225 Difference]: With dead ends: 2182 [2022-02-09 03:54:44,910 INFO L226 Difference]: Without dead ends: 2163 [2022-02-09 03:54:44,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:54:44,911 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 326 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:44,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1290 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-02-09 03:54:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1527. [2022-02-09 03:54:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8636959370904327) internal successors, (4370), 1526 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4370 transitions. [2022-02-09 03:54:44,928 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4370 transitions. Word has length 33 [2022-02-09 03:54:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4370 transitions. [2022-02-09 03:54:44,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4370 transitions. [2022-02-09 03:54:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:44,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:44,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:44,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-09 03:54:45,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:45,130 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1865843745, now seen corresponding path program 76 times [2022-02-09 03:54:45,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:45,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161296743] [2022-02-09 03:54:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:45,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:45,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:45,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161296743] [2022-02-09 03:54:45,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161296743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:45,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427680034] [2022-02-09 03:54:45,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:54:45,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:45,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:45,326 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) [2022-02-09 03:54:45,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-09 03:54:45,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:54:45,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:45,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:45,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:46,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427680034] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:46,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:46,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:54:46,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120825792] [2022-02-09 03:54:46,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:46,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:54:46,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:54:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:54:46,198 INFO L87 Difference]: Start difference. First operand 1527 states and 4370 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:47,563 INFO L93 Difference]: Finished difference Result 2182 states and 6147 transitions. [2022-02-09 03:54:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:54:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:47,567 INFO L225 Difference]: With dead ends: 2182 [2022-02-09 03:54:47,567 INFO L226 Difference]: Without dead ends: 2167 [2022-02-09 03:54:47,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:54:47,567 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 357 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:47,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1109 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:54:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-02-09 03:54:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1523. [2022-02-09 03:54:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-09 03:54:47,585 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-09 03:54:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:47,585 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-09 03:54:47,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-09 03:54:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:47,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:47,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:47,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:47,803 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,SelfDestructingSolverStorable78 [2022-02-09 03:54:47,803 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash 325987423, now seen corresponding path program 77 times [2022-02-09 03:54:47,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:47,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684603919] [2022-02-09 03:54:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:47,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:47,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:47,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684603919] [2022-02-09 03:54:47,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684603919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:47,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291031927] [2022-02-09 03:54:47,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:54:47,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:47,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:47,981 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) [2022-02-09 03:54:47,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-09 03:54:48,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:54:48,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:48,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:48,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:48,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:48,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291031927] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:48,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:48,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:54:48,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186382571] [2022-02-09 03:54:48,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:48,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:54:48,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:54:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:54:48,767 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:49,664 INFO L93 Difference]: Finished difference Result 2357 states and 6689 transitions. [2022-02-09 03:54:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 03:54:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:49,668 INFO L225 Difference]: With dead ends: 2357 [2022-02-09 03:54:49,668 INFO L226 Difference]: Without dead ends: 2338 [2022-02-09 03:54:49,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2022-02-09 03:54:49,668 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 223 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:49,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 913 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-02-09 03:54:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1527. [2022-02-09 03:54:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8610747051114025) internal successors, (4366), 1526 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4366 transitions. [2022-02-09 03:54:49,687 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4366 transitions. Word has length 33 [2022-02-09 03:54:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:49,687 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4366 transitions. [2022-02-09 03:54:49,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4366 transitions. [2022-02-09 03:54:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:49,688 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:49,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:49,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-09 03:54:49,903 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,SelfDestructingSolverStorable79 [2022-02-09 03:54:49,903 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1506929981, now seen corresponding path program 78 times [2022-02-09 03:54:49,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:49,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080532277] [2022-02-09 03:54:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:49,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:50,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:50,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080532277] [2022-02-09 03:54:50,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080532277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:50,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151583052] [2022-02-09 03:54:50,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:54:50,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:50,097 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) [2022-02-09 03:54:50,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-09 03:54:50,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 03:54:50,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:50,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:54:50,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:50,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:50,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151583052] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:50,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:50,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:54:50,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131352099] [2022-02-09 03:54:50,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:50,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:50,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:50,969 INFO L87 Difference]: Start difference. First operand 1527 states and 4366 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:51,941 INFO L93 Difference]: Finished difference Result 2353 states and 6675 transitions. [2022-02-09 03:54:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 03:54:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:51,945 INFO L225 Difference]: With dead ends: 2353 [2022-02-09 03:54:51,945 INFO L226 Difference]: Without dead ends: 2338 [2022-02-09 03:54:51,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2022-02-09 03:54:51,946 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 264 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:51,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 982 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-02-09 03:54:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1523. [2022-02-09 03:54:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-09 03:54:51,964 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-09 03:54:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:51,964 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-09 03:54:51,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-09 03:54:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:51,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:51,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:51,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:52,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:52,166 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1932089667, now seen corresponding path program 79 times [2022-02-09 03:54:52,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:52,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378414293] [2022-02-09 03:54:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:52,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:52,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:52,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378414293] [2022-02-09 03:54:52,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378414293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:52,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062830002] [2022-02-09 03:54:52,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:54:52,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:52,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:52,349 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) [2022-02-09 03:54:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-09 03:54:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:52,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:54:52,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:52,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:53,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062830002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:53,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:53,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-09 03:54:53,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515214669] [2022-02-09 03:54:53,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 03:54:53,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 03:54:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-09 03:54:53,215 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:54,588 INFO L93 Difference]: Finished difference Result 2178 states and 6117 transitions. [2022-02-09 03:54:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-09 03:54:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:54,591 INFO L225 Difference]: With dead ends: 2178 [2022-02-09 03:54:54,592 INFO L226 Difference]: Without dead ends: 2163 [2022-02-09 03:54:54,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2022-02-09 03:54:54,592 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 278 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:54,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1207 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:54:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-02-09 03:54:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1529. [2022-02-09 03:54:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 2.865183246073298) internal successors, (4378), 1528 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4378 transitions. [2022-02-09 03:54:54,610 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4378 transitions. Word has length 33 [2022-02-09 03:54:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:54,610 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 4378 transitions. [2022-02-09 03:54:54,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4378 transitions. [2022-02-09 03:54:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:54,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:54,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:54,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-09 03:54:54,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:54,812 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash 265691081, now seen corresponding path program 80 times [2022-02-09 03:54:54,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:54,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705802898] [2022-02-09 03:54:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:54,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:54,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:54,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705802898] [2022-02-09 03:54:54,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705802898] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:54,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247869559] [2022-02-09 03:54:54,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:54:54,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:54,986 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) [2022-02-09 03:54:54,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-09 03:54:55,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:54:55,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:55,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:55,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:55,188 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 5 treesize of output 3 [2022-02-09 03:54:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:55,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:55,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247869559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:55,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:55,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-09 03:54:55,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584087820] [2022-02-09 03:54:55,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:55,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-09 03:54:55,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-09 03:54:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-09 03:54:55,932 INFO L87 Difference]: Start difference. First operand 1529 states and 4378 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:57,095 INFO L93 Difference]: Finished difference Result 2149 states and 6052 transitions. [2022-02-09 03:54:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-09 03:54:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 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 33 [2022-02-09 03:54:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:57,098 INFO L225 Difference]: With dead ends: 2149 [2022-02-09 03:54:57,098 INFO L226 Difference]: Without dead ends: 2134 [2022-02-09 03:54:57,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-09 03:54:57,099 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 336 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:57,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 864 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 03:54:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-02-09 03:54:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1521. [2022-02-09 03:54:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.860526315789474) internal successors, (4348), 1520 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4348 transitions. [2022-02-09 03:54:57,116 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4348 transitions. Word has length 33 [2022-02-09 03:54:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:57,116 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4348 transitions. [2022-02-09 03:54:57,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4348 transitions. [2022-02-09 03:54:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:57,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:57,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:57,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-09 03:54:57,318 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,SelfDestructingSolverStorable82 [2022-02-09 03:54:57,318 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:54:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:54:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -620470029, now seen corresponding path program 81 times [2022-02-09 03:54:57,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:54:57,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544106500] [2022-02-09 03:54:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:54:57,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:54:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:54:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:57,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:54:57,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544106500] [2022-02-09 03:54:57,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544106500] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:54:57,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022184692] [2022-02-09 03:54:57,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:54:57,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:54:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:54:57,499 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) [2022-02-09 03:54:57,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-09 03:54:57,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-09 03:54:57,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:54:57,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:54:57,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:54:57,706 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 5 treesize of output 3 [2022-02-09 03:54:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:57,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:54:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:54:58,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022184692] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:54:58,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:54:58,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:54:58,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673435282] [2022-02-09 03:54:58,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:54:58,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:54:58,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:54:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:54:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:54:58,455 INFO L87 Difference]: Start difference. First operand 1521 states and 4348 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:54:59,904 INFO L93 Difference]: Finished difference Result 2712 states and 7650 transitions. [2022-02-09 03:54:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-09 03:54:59,904 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:54:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:54:59,907 INFO L225 Difference]: With dead ends: 2712 [2022-02-09 03:54:59,907 INFO L226 Difference]: Without dead ends: 2693 [2022-02-09 03:54:59,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2022-02-09 03:54:59,908 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 388 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:54:59,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1662 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:54:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2022-02-09 03:54:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1529. [2022-02-09 03:54:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 2.862565445026178) internal successors, (4374), 1528 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4374 transitions. [2022-02-09 03:54:59,926 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4374 transitions. Word has length 33 [2022-02-09 03:54:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:54:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 4374 transitions. [2022-02-09 03:54:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:54:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4374 transitions. [2022-02-09 03:54:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:54:59,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:54:59,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:54:59,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:00,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:00,128 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash 255712435, now seen corresponding path program 82 times [2022-02-09 03:55:00,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:00,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896729112] [2022-02-09 03:55:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:00,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:00,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896729112] [2022-02-09 03:55:00,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896729112] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:00,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802108213] [2022-02-09 03:55:00,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:55:00,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:00,311 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) [2022-02-09 03:55:00,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-09 03:55:00,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:55:00,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:00,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:55:00,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:00,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:01,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802108213] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:01,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:01,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-09 03:55:01,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772751681] [2022-02-09 03:55:01,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:01,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:55:01,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:55:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:55:01,180 INFO L87 Difference]: Start difference. First operand 1529 states and 4374 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:02,566 INFO L93 Difference]: Finished difference Result 2282 states and 6441 transitions. [2022-02-09 03:55:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-09 03:55:02,566 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:55:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:02,569 INFO L225 Difference]: With dead ends: 2282 [2022-02-09 03:55:02,569 INFO L226 Difference]: Without dead ends: 2267 [2022-02-09 03:55:02,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-02-09 03:55:02,569 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 372 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:02,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 1211 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 03:55:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-02-09 03:55:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1521. [2022-02-09 03:55:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.860526315789474) internal successors, (4348), 1520 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4348 transitions. [2022-02-09 03:55:02,587 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4348 transitions. Word has length 33 [2022-02-09 03:55:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:02,587 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4348 transitions. [2022-02-09 03:55:02,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4348 transitions. [2022-02-09 03:55:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:55:02,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:02,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:02,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-09 03:55:02,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:02,807 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1529684551, now seen corresponding path program 83 times [2022-02-09 03:55:02,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:02,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179974836] [2022-02-09 03:55:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:02,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:02,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:02,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179974836] [2022-02-09 03:55:02,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179974836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:02,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2553346] [2022-02-09 03:55:02,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:55:02,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:02,992 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) [2022-02-09 03:55:02,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-09 03:55:03,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:55:03,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:03,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-09 03:55:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:03,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:03,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:03,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:03,742 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:03,743 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-02-09 03:55:03,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:03,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2022-02-09 03:55:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:04,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2553346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:04,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:04,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2022-02-09 03:55:04,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752197725] [2022-02-09 03:55:04,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:04,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-09 03:55:04,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-09 03:55:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-02-09 03:55:04,097 INFO L87 Difference]: Start difference. First operand 1521 states and 4348 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:05,699 INFO L93 Difference]: Finished difference Result 2242 states and 6292 transitions. [2022-02-09 03:55:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-09 03:55:05,699 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 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 33 [2022-02-09 03:55:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:05,702 INFO L225 Difference]: With dead ends: 2242 [2022-02-09 03:55:05,702 INFO L226 Difference]: Without dead ends: 2227 [2022-02-09 03:55:05,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=452, Invalid=2628, Unknown=0, NotChecked=0, Total=3080 [2022-02-09 03:55:05,703 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 325 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:05,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1632 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:55:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-02-09 03:55:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 1519. [2022-02-09 03:55:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.86034255599473) internal successors, (4342), 1518 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4342 transitions. [2022-02-09 03:55:05,722 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4342 transitions. Word has length 33 [2022-02-09 03:55:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:05,722 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4342 transitions. [2022-02-09 03:55:05,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4342 transitions. [2022-02-09 03:55:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:55:05,724 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:05,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:05,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-09 03:55:05,924 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,SelfDestructingSolverStorable85 [2022-02-09 03:55:05,924 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1558594751, now seen corresponding path program 84 times [2022-02-09 03:55:05,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:05,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949610531] [2022-02-09 03:55:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:05,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:06,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:06,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949610531] [2022-02-09 03:55:06,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949610531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:06,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968871182] [2022-02-09 03:55:06,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:55:06,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:06,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:06,102 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) [2022-02-09 03:55:06,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-09 03:55:06,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-09 03:55:06,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:06,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:55:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:06,314 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 5 treesize of output 3 [2022-02-09 03:55:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:06,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:07,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968871182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:07,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:07,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:55:07,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34671677] [2022-02-09 03:55:07,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:07,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:55:07,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:55:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:55:07,078 INFO L87 Difference]: Start difference. First operand 1519 states and 4342 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:08,660 INFO L93 Difference]: Finished difference Result 3203 states and 8934 transitions. [2022-02-09 03:55:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:55:08,661 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:55:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:08,665 INFO L225 Difference]: With dead ends: 3203 [2022-02-09 03:55:08,665 INFO L226 Difference]: Without dead ends: 3184 [2022-02-09 03:55:08,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2022-02-09 03:55:08,666 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 468 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:08,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1579 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:55:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-02-09 03:55:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 1523. [2022-02-09 03:55:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-09 03:55:08,687 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-09 03:55:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:08,687 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-09 03:55:08,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-09 03:55:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:55:08,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:08,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:08,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-09 03:55:08,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:08,889 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash -682412287, now seen corresponding path program 85 times [2022-02-09 03:55:08,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:08,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690435343] [2022-02-09 03:55:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:08,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:09,067 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:09,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690435343] [2022-02-09 03:55:09,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690435343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:09,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522893482] [2022-02-09 03:55:09,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:55:09,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:09,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:09,069 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) [2022-02-09 03:55:09,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-09 03:55:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-09 03:55:09,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:09,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:09,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522893482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:09,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:09,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-09 03:55:09,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118363399] [2022-02-09 03:55:09,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-09 03:55:09,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-09 03:55:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-09 03:55:09,962 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:11,787 INFO L93 Difference]: Finished difference Result 2715 states and 7541 transitions. [2022-02-09 03:55:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:55:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-09 03:55:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:11,791 INFO L225 Difference]: With dead ends: 2715 [2022-02-09 03:55:11,791 INFO L226 Difference]: Without dead ends: 2700 [2022-02-09 03:55:11,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=390, Invalid=2160, Unknown=0, NotChecked=0, Total=2550 [2022-02-09 03:55:11,792 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:11,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1586 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 03:55:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2022-02-09 03:55:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1511. [2022-02-09 03:55:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.8596026490066224) internal successors, (4318), 1510 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4318 transitions. [2022-02-09 03:55:11,813 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4318 transitions. Word has length 33 [2022-02-09 03:55:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:11,813 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 4318 transitions. [2022-02-09 03:55:11,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4318 transitions. [2022-02-09 03:55:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:55:11,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:11,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:11,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:12,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:12,024 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -553984637, now seen corresponding path program 86 times [2022-02-09 03:55:12,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:12,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385050010] [2022-02-09 03:55:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:12,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:12,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:12,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385050010] [2022-02-09 03:55:12,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385050010] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:12,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614110166] [2022-02-09 03:55:12,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:55:12,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:12,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:12,208 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) [2022-02-09 03:55:12,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-09 03:55:12,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:55:12,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:12,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-09 03:55:12,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:12,417 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 5 treesize of output 3 [2022-02-09 03:55:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:12,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:13,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614110166] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:13,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:13,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:55:13,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78513777] [2022-02-09 03:55:13,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:13,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:55:13,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:55:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:55:13,177 INFO L87 Difference]: Start difference. First operand 1511 states and 4318 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:15,006 INFO L93 Difference]: Finished difference Result 2483 states and 6896 transitions. [2022-02-09 03:55:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-09 03:55:15,006 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:55:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:15,010 INFO L225 Difference]: With dead ends: 2483 [2022-02-09 03:55:15,010 INFO L226 Difference]: Without dead ends: 2468 [2022-02-09 03:55:15,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=470, Invalid=2610, Unknown=0, NotChecked=0, Total=3080 [2022-02-09 03:55:15,011 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 462 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:15,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1431 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:55:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-02-09 03:55:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1517. [2022-02-09 03:55:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 2.862796833773087) internal successors, (4340), 1516 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 4340 transitions. [2022-02-09 03:55:15,030 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 4340 transitions. Word has length 33 [2022-02-09 03:55:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:15,030 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 4340 transitions. [2022-02-09 03:55:15,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 4340 transitions. [2022-02-09 03:55:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-09 03:55:15,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:15,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:15,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-09 03:55:15,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-09 03:55:15,241 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2074584073, now seen corresponding path program 87 times [2022-02-09 03:55:15,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:15,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630828725] [2022-02-09 03:55:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:15,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:15,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:15,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630828725] [2022-02-09 03:55:15,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630828725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:15,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081456811] [2022-02-09 03:55:15,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:55:15,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:15,419 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) [2022-02-09 03:55:15,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-09 03:55:15,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:55:15,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-09 03:55:15,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:15,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:16,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081456811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:16,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:16,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-09 03:55:16,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721408082] [2022-02-09 03:55:16,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:16,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-09 03:55:16,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-09 03:55:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-09 03:55:16,338 INFO L87 Difference]: Start difference. First operand 1517 states and 4340 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:17,739 INFO L93 Difference]: Finished difference Result 2842 states and 7932 transitions. [2022-02-09 03:55:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 03:55:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 33 [2022-02-09 03:55:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:17,744 INFO L225 Difference]: With dead ends: 2842 [2022-02-09 03:55:17,744 INFO L226 Difference]: Without dead ends: 2827 [2022-02-09 03:55:17,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2022-02-09 03:55:17,745 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 393 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:17,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1501 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 03:55:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-02-09 03:55:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1450. [2022-02-09 03:55:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 2.8612836438923397) internal successors, (4146), 1449 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 4146 transitions. [2022-02-09 03:55:17,765 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 4146 transitions. Word has length 33 [2022-02-09 03:55:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:17,765 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 4146 transitions. [2022-02-09 03:55:17,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 4146 transitions. [2022-02-09 03:55:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-09 03:55:17,767 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:17,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:17,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:17,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:17,970 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1434777477, now seen corresponding path program 1 times [2022-02-09 03:55:17,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:17,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816269843] [2022-02-09 03:55:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:17,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 03:55:17,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:17,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816269843] [2022-02-09 03:55:17,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816269843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:17,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518906673] [2022-02-09 03:55:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:17,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:17,989 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) [2022-02-09 03:55:17,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-09 03:55:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:18,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-09 03:55:18,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:18,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 03:55:18,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:18,108 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-09 03:55:18,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-02-09 03:55:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 03:55:18,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518906673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:18,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:18,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-09 03:55:18,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247030485] [2022-02-09 03:55:18,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:18,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-09 03:55:18,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-09 03:55:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-09 03:55:18,121 INFO L87 Difference]: Start difference. First operand 1450 states and 4146 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:18,190 INFO L93 Difference]: Finished difference Result 1940 states and 5616 transitions. [2022-02-09 03:55:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 03:55:18,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 37 [2022-02-09 03:55:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:18,193 INFO L225 Difference]: With dead ends: 1940 [2022-02-09 03:55:18,193 INFO L226 Difference]: Without dead ends: 1940 [2022-02-09 03:55:18,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-09 03:55:18,194 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 118 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:18,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 252 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-09 03:55:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2022-02-09 03:55:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1810. [2022-02-09 03:55:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1809 states have (on average 2.902155887230514) internal successors, (5250), 1809 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 5250 transitions. [2022-02-09 03:55:18,212 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 5250 transitions. Word has length 37 [2022-02-09 03:55:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:18,212 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 5250 transitions. [2022-02-09 03:55:18,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 5250 transitions. [2022-02-09 03:55:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-09 03:55:18,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:18,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:18,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:18,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:18,415 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1856254911, now seen corresponding path program 88 times [2022-02-09 03:55:18,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:18,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338375963] [2022-02-09 03:55:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:18,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:18,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:18,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338375963] [2022-02-09 03:55:18,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338375963] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:18,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778674977] [2022-02-09 03:55:18,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:55:18,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:18,439 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) [2022-02-09 03:55:18,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-09 03:55:18,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:55:18,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:18,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-09 03:55:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:18,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:18,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778674977] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:18,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:18,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-02-09 03:55:18,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143824242] [2022-02-09 03:55:18,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:18,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 03:55:18,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 03:55:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-09 03:55:18,582 INFO L87 Difference]: Start difference. First operand 1810 states and 5250 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-02-09 03:55:18,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:18,609 INFO L93 Difference]: Finished difference Result 2953 states and 8537 transitions. [2022-02-09 03:55:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 03:55:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 38 [2022-02-09 03:55:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:18,613 INFO L225 Difference]: With dead ends: 2953 [2022-02-09 03:55:18,613 INFO L226 Difference]: Without dead ends: 2856 [2022-02-09 03:55:18,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-09 03:55:18,613 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:18,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 79 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:55:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-02-09 03:55:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2284. [2022-02-09 03:55:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2283 states have (on average 2.9890494962768286) internal successors, (6824), 2283 states have internal predecessors, (6824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 6824 transitions. [2022-02-09 03:55:18,655 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 6824 transitions. Word has length 38 [2022-02-09 03:55:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:18,655 INFO L470 AbstractCegarLoop]: Abstraction has 2284 states and 6824 transitions. [2022-02-09 03:55:18,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-02-09 03:55:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 6824 transitions. [2022-02-09 03:55:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-09 03:55:18,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:18,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:18,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:18,871 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1630144413, now seen corresponding path program 89 times [2022-02-09 03:55:18,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:18,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761251833] [2022-02-09 03:55:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:18,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 03:55:18,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:18,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761251833] [2022-02-09 03:55:18,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761251833] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:18,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58886305] [2022-02-09 03:55:18,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:55:18,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:18,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:18,887 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) [2022-02-09 03:55:18,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-09 03:55:18,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:55:18,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:18,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-09 03:55:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-09 03:55:18,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-09 03:55:18,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58886305] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:55:18,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-09 03:55:18,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-02-09 03:55:18,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214860398] [2022-02-09 03:55:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:55:18,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 03:55:18,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 03:55:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-09 03:55:18,957 INFO L87 Difference]: Start difference. First operand 2284 states and 6824 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-02-09 03:55:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:18,992 INFO L93 Difference]: Finished difference Result 6496 states and 19271 transitions. [2022-02-09 03:55:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 03:55:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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 39 [2022-02-09 03:55:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:19,003 INFO L225 Difference]: With dead ends: 6496 [2022-02-09 03:55:19,003 INFO L226 Difference]: Without dead ends: 6091 [2022-02-09 03:55:19,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-09 03:55:19,003 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 79 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:19,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 78 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 03:55:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2022-02-09 03:55:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 5331. [2022-02-09 03:55:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 3.052908067542214) internal successors, (16272), 5330 states have internal predecessors, (16272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 16272 transitions. [2022-02-09 03:55:19,081 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 16272 transitions. Word has length 39 [2022-02-09 03:55:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:19,081 INFO L470 AbstractCegarLoop]: Abstraction has 5331 states and 16272 transitions. [2022-02-09 03:55:19,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2022-02-09 03:55:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 16272 transitions. [2022-02-09 03:55:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-09 03:55:19,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:19,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:19,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-09 03:55:19,303 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,SelfDestructingSolverStorable92 [2022-02-09 03:55:19,303 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1568623265, now seen corresponding path program 2 times [2022-02-09 03:55:19,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:19,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354706528] [2022-02-09 03:55:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:19,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:19,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:19,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354706528] [2022-02-09 03:55:19,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354706528] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:19,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087024501] [2022-02-09 03:55:19,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:55:19,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:19,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:19,356 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) [2022-02-09 03:55:19,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-09 03:55:19,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:55:19,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:19,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-09 03:55:19,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:19,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:19,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:19,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:19,531 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:19,531 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 13 treesize of output 17 [2022-02-09 03:55:19,558 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:19,558 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 17 treesize of output 21 [2022-02-09 03:55:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:19,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087024501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:19,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:19,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-02-09 03:55:19,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886283810] [2022-02-09 03:55:19,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:19,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 03:55:19,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 03:55:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-09 03:55:19,590 INFO L87 Difference]: Start difference. First operand 5331 states and 16272 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:19,832 INFO L93 Difference]: Finished difference Result 7486 states and 22666 transitions. [2022-02-09 03:55:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 03:55:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 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 43 [2022-02-09 03:55:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:19,845 INFO L225 Difference]: With dead ends: 7486 [2022-02-09 03:55:19,845 INFO L226 Difference]: Without dead ends: 7486 [2022-02-09 03:55:19,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-02-09 03:55:19,846 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 203 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:19,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 898 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 03:55:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2022-02-09 03:55:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 6990. [2022-02-09 03:55:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 3.0479324653026185) internal successors, (21302), 6989 states have internal predecessors, (21302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 21302 transitions. [2022-02-09 03:55:19,973 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 21302 transitions. Word has length 43 [2022-02-09 03:55:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:19,974 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 21302 transitions. [2022-02-09 03:55:19,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 21302 transitions. [2022-02-09 03:55:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:19,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:19,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:19,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-09 03:55:20,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:20,183 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1131601065, now seen corresponding path program 3 times [2022-02-09 03:55:20,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:20,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522325563] [2022-02-09 03:55:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:20,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:20,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:20,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522325563] [2022-02-09 03:55:20,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522325563] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:20,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054142459] [2022-02-09 03:55:20,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:55:20,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:20,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:20,773 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) [2022-02-09 03:55:20,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-09 03:55:20,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 03:55:20,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:20,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:20,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:21,007 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 15 treesize of output 7 [2022-02-09 03:55:21,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:21,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:22,562 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:22,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:22,688 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:22,688 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 37 treesize of output 39 [2022-02-09 03:55:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:22,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054142459] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:22,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:22,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:55:22,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797372497] [2022-02-09 03:55:22,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:22,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:55:22,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:55:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2641, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:55:22,922 INFO L87 Difference]: Start difference. First operand 6990 states and 21302 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:26,001 INFO L93 Difference]: Finished difference Result 15344 states and 45923 transitions. [2022-02-09 03:55:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 03:55:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:26,032 INFO L225 Difference]: With dead ends: 15344 [2022-02-09 03:55:26,033 INFO L226 Difference]: Without dead ends: 15187 [2022-02-09 03:55:26,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=581, Invalid=6901, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 03:55:26,033 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 338 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:26,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2952 Invalid, 3890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 03:55:26,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2022-02-09 03:55:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 7110. [2022-02-09 03:55:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 7109 states have (on average 3.039668026445351) internal successors, (21609), 7109 states have internal predecessors, (21609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 21609 transitions. [2022-02-09 03:55:26,205 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 21609 transitions. Word has length 48 [2022-02-09 03:55:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:26,205 INFO L470 AbstractCegarLoop]: Abstraction has 7110 states and 21609 transitions. [2022-02-09 03:55:26,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 21609 transitions. [2022-02-09 03:55:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:26,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:26,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:26,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:26,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:26,415 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash 362868969, now seen corresponding path program 4 times [2022-02-09 03:55:26,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:26,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941583053] [2022-02-09 03:55:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:26,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:26,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:26,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941583053] [2022-02-09 03:55:26,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941583053] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:26,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544369198] [2022-02-09 03:55:26,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:55:26,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:26,946 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) [2022-02-09 03:55:26,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-09 03:55:26,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:55:26,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:26,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:27,197 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 15 treesize of output 7 [2022-02-09 03:55:27,386 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 15 treesize of output 7 [2022-02-09 03:55:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:27,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:28,623 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:28,624 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 34 treesize of output 36 [2022-02-09 03:55:28,762 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:28,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:55:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:29,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544369198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:29,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:29,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:55:29,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352808383] [2022-02-09 03:55:29,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:29,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:55:29,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:55:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:55:29,022 INFO L87 Difference]: Start difference. First operand 7110 states and 21609 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:31,834 INFO L93 Difference]: Finished difference Result 15285 states and 45803 transitions. [2022-02-09 03:55:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:55:31,834 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:31,865 INFO L225 Difference]: With dead ends: 15285 [2022-02-09 03:55:31,865 INFO L226 Difference]: Without dead ends: 15250 [2022-02-09 03:55:31,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:55:31,865 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 264 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:31,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 3074 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 03:55:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15250 states. [2022-02-09 03:55:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15250 to 7122. [2022-02-09 03:55:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7122 states, 7121 states have (on average 3.0386181716051115) internal successors, (21638), 7121 states have internal predecessors, (21638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 21638 transitions. [2022-02-09 03:55:32,035 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 21638 transitions. Word has length 48 [2022-02-09 03:55:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:32,035 INFO L470 AbstractCegarLoop]: Abstraction has 7122 states and 21638 transitions. [2022-02-09 03:55:32,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 21638 transitions. [2022-02-09 03:55:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:32,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:32,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:32,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:32,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:32,246 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1239051433, now seen corresponding path program 5 times [2022-02-09 03:55:32,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:32,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051149989] [2022-02-09 03:55:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:32,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:32,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:32,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051149989] [2022-02-09 03:55:32,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051149989] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:32,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137411896] [2022-02-09 03:55:32,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:55:32,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:32,795 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) [2022-02-09 03:55:32,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-09 03:55:32,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 03:55:32,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:32,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:55:32,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:33,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:33,223 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 15 treesize of output 7 [2022-02-09 03:55:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:33,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:34,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:34,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:34,666 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:34,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:55:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:34,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137411896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:34,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:34,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:55:34,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595201319] [2022-02-09 03:55:34,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:34,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:55:34,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:55:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:55:34,923 INFO L87 Difference]: Start difference. First operand 7122 states and 21638 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:37,664 INFO L93 Difference]: Finished difference Result 12667 states and 38256 transitions. [2022-02-09 03:55:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:55:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:37,687 INFO L225 Difference]: With dead ends: 12667 [2022-02-09 03:55:37,688 INFO L226 Difference]: Without dead ends: 12623 [2022-02-09 03:55:37,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=531, Invalid=5949, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:55:37,688 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 331 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:37,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2605 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3268 Invalid, 0 Unknown, 82 Unchecked, 1.2s Time] [2022-02-09 03:55:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-09 03:55:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-09 03:55:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.038780384993677) internal successors, (21627), 7117 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21627 transitions. [2022-02-09 03:55:37,825 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21627 transitions. Word has length 48 [2022-02-09 03:55:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:37,825 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21627 transitions. [2022-02-09 03:55:37,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21627 transitions. [2022-02-09 03:55:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:37,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:37,856 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:37,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:38,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:38,057 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 504584109, now seen corresponding path program 6 times [2022-02-09 03:55:38,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:38,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915534948] [2022-02-09 03:55:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:38,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:38,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:38,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915534948] [2022-02-09 03:55:38,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915534948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:38,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180620801] [2022-02-09 03:55:38,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:55:38,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:38,584 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) [2022-02-09 03:55:38,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-09 03:55:38,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 03:55:38,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:38,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:38,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:38,813 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 15 treesize of output 7 [2022-02-09 03:55:39,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:39,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:40,460 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:40,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:40,601 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:40,602 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 37 treesize of output 39 [2022-02-09 03:55:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:40,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180620801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:40,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:40,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:55:40,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331309347] [2022-02-09 03:55:40,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:40,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:55:40,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:55:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:55:40,831 INFO L87 Difference]: Start difference. First operand 7118 states and 21627 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:43,041 INFO L93 Difference]: Finished difference Result 12337 states and 37157 transitions. [2022-02-09 03:55:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 03:55:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:43,064 INFO L225 Difference]: With dead ends: 12337 [2022-02-09 03:55:43,065 INFO L226 Difference]: Without dead ends: 12305 [2022-02-09 03:55:43,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=420, Invalid=4692, Unknown=0, NotChecked=0, Total=5112 [2022-02-09 03:55:43,065 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 306 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 3412 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:43,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3454 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3412 Invalid, 0 Unknown, 97 Unchecked, 1.2s Time] [2022-02-09 03:55:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2022-02-09 03:55:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 7144. [2022-02-09 03:55:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 7143 states have (on average 3.037239255214896) internal successors, (21695), 7143 states have internal predecessors, (21695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 21695 transitions. [2022-02-09 03:55:43,197 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 21695 transitions. Word has length 48 [2022-02-09 03:55:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 21695 transitions. [2022-02-09 03:55:43,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 21695 transitions. [2022-02-09 03:55:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:43,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:43,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:43,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-09 03:55:43,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-09 03:55:43,406 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1859036179, now seen corresponding path program 7 times [2022-02-09 03:55:43,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:43,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755989053] [2022-02-09 03:55:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:43,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:43,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:43,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755989053] [2022-02-09 03:55:43,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755989053] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:43,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558702977] [2022-02-09 03:55:43,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:55:43,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:43,941 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) [2022-02-09 03:55:43,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-09 03:55:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:43,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:43,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:44,165 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 15 treesize of output 7 [2022-02-09 03:55:44,369 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 15 treesize of output 7 [2022-02-09 03:55:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:44,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:45,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:45,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:45,760 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:45,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:55:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:46,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558702977] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:46,001 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:46,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:55:46,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898023138] [2022-02-09 03:55:46,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:46,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:55:46,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:55:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:55:46,002 INFO L87 Difference]: Start difference. First operand 7144 states and 21695 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:48,478 INFO L93 Difference]: Finished difference Result 15325 states and 45842 transitions. [2022-02-09 03:55:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 03:55:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:48,507 INFO L225 Difference]: With dead ends: 15325 [2022-02-09 03:55:48,508 INFO L226 Difference]: Without dead ends: 15255 [2022-02-09 03:55:48,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=522, Invalid=6120, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 03:55:48,508 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 379 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:48,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 2677 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2919 Invalid, 0 Unknown, 262 Unchecked, 1.1s Time] [2022-02-09 03:55:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2022-02-09 03:55:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 7136. [2022-02-09 03:55:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.037000700770848) internal successors, (21669), 7135 states have internal predecessors, (21669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21669 transitions. [2022-02-09 03:55:48,682 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21669 transitions. Word has length 48 [2022-02-09 03:55:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:48,682 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21669 transitions. [2022-02-09 03:55:48,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21669 transitions. [2022-02-09 03:55:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:48,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:48,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:48,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:48,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-09 03:55:48,903 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2098203905, now seen corresponding path program 8 times [2022-02-09 03:55:48,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:48,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264851907] [2022-02-09 03:55:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:48,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:49,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:49,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264851907] [2022-02-09 03:55:49,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264851907] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:49,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620686354] [2022-02-09 03:55:49,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:55:49,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:49,431 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) [2022-02-09 03:55:49,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-09 03:55:49,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:55:49,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:49,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:49,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:50,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:51,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:51,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:51,265 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:51,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:55:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:51,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620686354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:51,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:51,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:55:51,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398474177] [2022-02-09 03:55:51,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:51,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:55:51,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:55:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:55:51,504 INFO L87 Difference]: Start difference. First operand 7136 states and 21669 transitions. Second operand has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:55:54,445 INFO L93 Difference]: Finished difference Result 15286 states and 45733 transitions. [2022-02-09 03:55:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 03:55:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 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 48 [2022-02-09 03:55:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:55:54,473 INFO L225 Difference]: With dead ends: 15286 [2022-02-09 03:55:54,474 INFO L226 Difference]: Without dead ends: 15253 [2022-02-09 03:55:54,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=539, Invalid=6433, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:55:54,474 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 325 mSDsluCounter, 3845 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:55:54,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 3089 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 03:55:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15253 states. [2022-02-09 03:55:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15253 to 7124. [2022-02-09 03:55:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0380457672329073) internal successors, (21640), 7123 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21640 transitions. [2022-02-09 03:55:54,639 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21640 transitions. Word has length 48 [2022-02-09 03:55:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:55:54,639 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21640 transitions. [2022-02-09 03:55:54,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:55:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21640 transitions. [2022-02-09 03:55:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:55:54,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:55:54,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:55:54,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-09 03:55:54,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-09 03:55:54,849 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:55:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:55:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -778563351, now seen corresponding path program 9 times [2022-02-09 03:55:54,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:55:54,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431479372] [2022-02-09 03:55:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:55:54,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:55:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:55:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:55,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:55:55,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431479372] [2022-02-09 03:55:55,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431479372] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:55:55,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374952481] [2022-02-09 03:55:55,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:55:55,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:55:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:55:55,383 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) [2022-02-09 03:55:55,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-09 03:55:55,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 03:55:55,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:55:55,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:55:55,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:55:55,609 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 15 treesize of output 7 [2022-02-09 03:55:55,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:55:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:56,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:55:57,060 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:57,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:55:57,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:55:57,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:55:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:55:57,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374952481] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:55:57,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:55:57,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:55:57,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177231841] [2022-02-09 03:55:57,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:55:57,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:55:57,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:55:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:55:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:55:57,415 INFO L87 Difference]: Start difference. First operand 7124 states and 21640 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:00,161 INFO L93 Difference]: Finished difference Result 15265 states and 45703 transitions. [2022-02-09 03:56:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-09 03:56:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:00,188 INFO L225 Difference]: With dead ends: 15265 [2022-02-09 03:56:00,188 INFO L226 Difference]: Without dead ends: 15167 [2022-02-09 03:56:00,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=570, Invalid=6570, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:56:00,189 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 343 mSDsluCounter, 3328 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:00,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2658 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:56:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15167 states. [2022-02-09 03:56:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15167 to 7104. [2022-02-09 03:56:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 7103 states have (on average 3.040546248064198) internal successors, (21597), 7103 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 21597 transitions. [2022-02-09 03:56:00,333 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 21597 transitions. Word has length 48 [2022-02-09 03:56:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:00,333 INFO L470 AbstractCegarLoop]: Abstraction has 7104 states and 21597 transitions. [2022-02-09 03:56:00,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 21597 transitions. [2022-02-09 03:56:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:00,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:00,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:00,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-09 03:56:00,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:00,551 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 236808205, now seen corresponding path program 10 times [2022-02-09 03:56:00,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:00,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543466881] [2022-02-09 03:56:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:00,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:01,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:01,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543466881] [2022-02-09 03:56:01,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543466881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:01,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724739588] [2022-02-09 03:56:01,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:56:01,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:01,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:01,092 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) [2022-02-09 03:56:01,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-09 03:56:01,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:56:01,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:01,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:01,325 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 15 treesize of output 7 [2022-02-09 03:56:01,531 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 15 treesize of output 7 [2022-02-09 03:56:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:02,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:02,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:02,790 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:02,923 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:02,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:03,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724739588] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:03,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:03,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:56:03,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883145582] [2022-02-09 03:56:03,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:03,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:56:03,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:56:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2640, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:56:03,173 INFO L87 Difference]: Start difference. First operand 7104 states and 21597 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:05,898 INFO L93 Difference]: Finished difference Result 15437 states and 46119 transitions. [2022-02-09 03:56:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-09 03:56:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:05,925 INFO L225 Difference]: With dead ends: 15437 [2022-02-09 03:56:05,926 INFO L226 Difference]: Without dead ends: 15376 [2022-02-09 03:56:05,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6598, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:56:05,926 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 360 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:05,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2939 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3496 Invalid, 0 Unknown, 276 Unchecked, 1.3s Time] [2022-02-09 03:56:05,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2022-02-09 03:56:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 7220. [2022-02-09 03:56:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 7219 states have (on average 3.029089901648428) internal successors, (21867), 7219 states have internal predecessors, (21867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 21867 transitions. [2022-02-09 03:56:06,149 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 21867 transitions. Word has length 48 [2022-02-09 03:56:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:06,149 INFO L470 AbstractCegarLoop]: Abstraction has 7220 states and 21867 transitions. [2022-02-09 03:56:06,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 21867 transitions. [2022-02-09 03:56:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:06,158 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:06,158 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:06,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-09 03:56:06,358 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,SelfDestructingSolverStorable101 [2022-02-09 03:56:06,358 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash -834397847, now seen corresponding path program 11 times [2022-02-09 03:56:06,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:06,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776574306] [2022-02-09 03:56:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:06,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:06,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:06,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776574306] [2022-02-09 03:56:06,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776574306] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:06,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831702372] [2022-02-09 03:56:06,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:56:06,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:06,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:06,912 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) [2022-02-09 03:56:06,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-09 03:56:06,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 03:56:06,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:56:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:07,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:56:07,335 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 15 treesize of output 7 [2022-02-09 03:56:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:07,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:08,688 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:08,688 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 34 treesize of output 36 [2022-02-09 03:56:08,824 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:08,824 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:09,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831702372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:09,052 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:09,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:56:09,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900985189] [2022-02-09 03:56:09,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:56:09,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:56:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2640, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:56:09,053 INFO L87 Difference]: Start difference. First operand 7220 states and 21867 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:11,977 INFO L93 Difference]: Finished difference Result 15376 states and 45967 transitions. [2022-02-09 03:56:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 03:56:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:12,009 INFO L225 Difference]: With dead ends: 15376 [2022-02-09 03:56:12,009 INFO L226 Difference]: Without dead ends: 15269 [2022-02-09 03:56:12,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6598, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:56:12,009 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 363 mSDsluCounter, 3964 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 4010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:12,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 3159 Invalid, 4010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 03:56:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15269 states. [2022-02-09 03:56:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15269 to 7164. [2022-02-09 03:56:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7164 states, 7163 states have (on average 3.034063939690074) internal successors, (21733), 7163 states have internal predecessors, (21733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 21733 transitions. [2022-02-09 03:56:12,170 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 21733 transitions. Word has length 48 [2022-02-09 03:56:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:12,171 INFO L470 AbstractCegarLoop]: Abstraction has 7164 states and 21733 transitions. [2022-02-09 03:56:12,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 21733 transitions. [2022-02-09 03:56:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:12,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:12,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:12,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-09 03:56:12,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:12,381 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash 201175157, now seen corresponding path program 12 times [2022-02-09 03:56:12,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:12,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234927600] [2022-02-09 03:56:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:12,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:12,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:12,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234927600] [2022-02-09 03:56:12,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234927600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:12,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757126801] [2022-02-09 03:56:12,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:56:12,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:12,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:12,937 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) [2022-02-09 03:56:12,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-09 03:56:12,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 03:56:12,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:12,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:56:12,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:13,165 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 11 treesize of output 7 [2022-02-09 03:56:13,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:56:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:13,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:14,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:14,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:14,972 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:14,972 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-09 03:56:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:15,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757126801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:15,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:15,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-09 03:56:15,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798708215] [2022-02-09 03:56:15,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:15,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-09 03:56:15,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-09 03:56:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2022-02-09 03:56:15,227 INFO L87 Difference]: Start difference. First operand 7164 states and 21733 transitions. Second operand has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:19,617 INFO L93 Difference]: Finished difference Result 13727 states and 40870 transitions. [2022-02-09 03:56:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-09 03:56:19,618 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:19,640 INFO L225 Difference]: With dead ends: 13727 [2022-02-09 03:56:19,640 INFO L226 Difference]: Without dead ends: 13687 [2022-02-09 03:56:19,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2645 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=708, Invalid=8798, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 03:56:19,641 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 394 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 4897 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:19,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 2745 Invalid, 4990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4897 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-09 03:56:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13687 states. [2022-02-09 03:56:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13687 to 7182. [2022-02-09 03:56:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0327252471800583) internal successors, (21778), 7181 states have internal predecessors, (21778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21778 transitions. [2022-02-09 03:56:19,770 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21778 transitions. Word has length 48 [2022-02-09 03:56:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:19,770 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21778 transitions. [2022-02-09 03:56:19,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21778 transitions. [2022-02-09 03:56:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:19,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:19,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:19,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-09 03:56:19,979 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,SelfDestructingSolverStorable103 [2022-02-09 03:56:19,980 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash -27583687, now seen corresponding path program 13 times [2022-02-09 03:56:19,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:19,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251369400] [2022-02-09 03:56:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:19,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:20,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:20,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251369400] [2022-02-09 03:56:20,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251369400] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:20,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481369449] [2022-02-09 03:56:20,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:56:20,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:20,546 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) [2022-02-09 03:56:20,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-09 03:56:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:20,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:20,775 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 15 treesize of output 7 [2022-02-09 03:56:20,987 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 15 treesize of output 7 [2022-02-09 03:56:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:21,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:22,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:22,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:22,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:22,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:22,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481369449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:22,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:22,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:56:22,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847683167] [2022-02-09 03:56:22,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:22,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:56:22,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:22,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:56:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:56:22,675 INFO L87 Difference]: Start difference. First operand 7182 states and 21778 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:25,266 INFO L93 Difference]: Finished difference Result 15331 states and 45899 transitions. [2022-02-09 03:56:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:56:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:25,296 INFO L225 Difference]: With dead ends: 15331 [2022-02-09 03:56:25,296 INFO L226 Difference]: Without dead ends: 15286 [2022-02-09 03:56:25,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:56:25,297 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 317 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 3535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:25,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2563 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:56:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15286 states. [2022-02-09 03:56:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15286 to 7176. [2022-02-09 03:56:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7175 states have (on average 3.0326132404181183) internal successors, (21759), 7175 states have internal predecessors, (21759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 21759 transitions. [2022-02-09 03:56:25,471 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 21759 transitions. Word has length 48 [2022-02-09 03:56:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:25,471 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 21759 transitions. [2022-02-09 03:56:25,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 21759 transitions. [2022-02-09 03:56:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:25,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:25,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:25,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-09 03:56:25,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:25,682 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -974315487, now seen corresponding path program 14 times [2022-02-09 03:56:25,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:25,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890391650] [2022-02-09 03:56:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:25,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:26,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:26,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890391650] [2022-02-09 03:56:26,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890391650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:26,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169152085] [2022-02-09 03:56:26,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:56:26,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:26,245 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) [2022-02-09 03:56:26,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-09 03:56:26,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:56:26,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:26,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:26,464 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 15 treesize of output 7 [2022-02-09 03:56:26,653 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 15 treesize of output 7 [2022-02-09 03:56:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:27,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:27,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:27,943 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:28,066 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:28,067 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:28,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169152085] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:28,288 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:28,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:56:28,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503381982] [2022-02-09 03:56:28,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:28,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:56:28,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:56:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:56:28,289 INFO L87 Difference]: Start difference. First operand 7176 states and 21759 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:30,818 INFO L93 Difference]: Finished difference Result 12406 states and 37302 transitions. [2022-02-09 03:56:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 03:56:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:30,841 INFO L225 Difference]: With dead ends: 12406 [2022-02-09 03:56:30,841 INFO L226 Difference]: Without dead ends: 12374 [2022-02-09 03:56:30,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 59 SyntacticMatches, 19 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=470, Invalid=5230, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 03:56:30,842 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 337 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:30,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2645 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2747 Invalid, 0 Unknown, 241 Unchecked, 1.0s Time] [2022-02-09 03:56:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12374 states. [2022-02-09 03:56:30,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12374 to 7270. [2022-02-09 03:56:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0215985692667493) internal successors, (21964), 7269 states have internal predecessors, (21964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21964 transitions. [2022-02-09 03:56:31,032 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21964 transitions. Word has length 48 [2022-02-09 03:56:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:31,032 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21964 transitions. [2022-02-09 03:56:31,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21964 transitions. [2022-02-09 03:56:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:31,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:31,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:31,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-09 03:56:31,242 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,SelfDestructingSolverStorable105 [2022-02-09 03:56:31,242 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -826540769, now seen corresponding path program 15 times [2022-02-09 03:56:31,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:31,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643025302] [2022-02-09 03:56:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:31,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:31,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:31,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643025302] [2022-02-09 03:56:31,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643025302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:31,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666343957] [2022-02-09 03:56:31,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:56:31,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:31,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:31,773 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) [2022-02-09 03:56:31,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-09 03:56:31,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 03:56:31,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:31,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:56:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:32,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:56:32,189 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 11 treesize of output 7 [2022-02-09 03:56:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:32,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:33,528 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:33,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:33,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:33,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:33,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666343957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:33,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:33,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:56:33,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535233598] [2022-02-09 03:56:33,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:33,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:56:33,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:33,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:56:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:56:33,885 INFO L87 Difference]: Start difference. First operand 7270 states and 21964 transitions. Second operand has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:36,983 INFO L93 Difference]: Finished difference Result 15582 states and 46390 transitions. [2022-02-09 03:56:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-09 03:56:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:37,012 INFO L225 Difference]: With dead ends: 15582 [2022-02-09 03:56:37,012 INFO L226 Difference]: Without dead ends: 15439 [2022-02-09 03:56:37,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=544, Invalid=6596, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:56:37,012 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 366 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 4268 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:37,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 3546 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4268 Invalid, 0 Unknown, 207 Unchecked, 1.6s Time] [2022-02-09 03:56:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15439 states. [2022-02-09 03:56:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15439 to 7182. [2022-02-09 03:56:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0318897089541847) internal successors, (21772), 7181 states have internal predecessors, (21772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21772 transitions. [2022-02-09 03:56:37,184 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21772 transitions. Word has length 48 [2022-02-09 03:56:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:37,184 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21772 transitions. [2022-02-09 03:56:37,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21772 transitions. [2022-02-09 03:56:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:37,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:37,193 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:37,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-09 03:56:37,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:37,394 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1128753005, now seen corresponding path program 16 times [2022-02-09 03:56:37,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:37,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745389679] [2022-02-09 03:56:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:37,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:37,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:37,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745389679] [2022-02-09 03:56:37,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745389679] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:37,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285263540] [2022-02-09 03:56:37,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:56:37,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:37,943 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) [2022-02-09 03:56:37,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-09 03:56:37,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:56:37,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:37,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:37,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:38,197 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 15 treesize of output 7 [2022-02-09 03:56:38,381 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 15 treesize of output 7 [2022-02-09 03:56:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:38,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:39,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:39,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:39,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:39,802 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:40,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285263540] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:40,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:40,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:56:40,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807026412] [2022-02-09 03:56:40,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:40,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:56:40,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:40,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:56:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:56:40,031 INFO L87 Difference]: Start difference. First operand 7182 states and 21772 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:42,696 INFO L93 Difference]: Finished difference Result 15433 states and 46066 transitions. [2022-02-09 03:56:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 03:56:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:42,728 INFO L225 Difference]: With dead ends: 15433 [2022-02-09 03:56:42,728 INFO L226 Difference]: Without dead ends: 15421 [2022-02-09 03:56:42,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6430, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:56:42,729 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 400 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:42,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2801 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3310 Invalid, 0 Unknown, 242 Unchecked, 1.2s Time] [2022-02-09 03:56:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2022-02-09 03:56:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 7218. [2022-02-09 03:56:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 7217 states have (on average 3.0288208396840792) internal successors, (21859), 7217 states have internal predecessors, (21859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 21859 transitions. [2022-02-09 03:56:42,935 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 21859 transitions. Word has length 48 [2022-02-09 03:56:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:42,936 INFO L470 AbstractCegarLoop]: Abstraction has 7218 states and 21859 transitions. [2022-02-09 03:56:42,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 21859 transitions. [2022-02-09 03:56:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:42,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:42,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:42,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-09 03:56:43,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:43,145 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:43,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:43,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1498757225, now seen corresponding path program 17 times [2022-02-09 03:56:43,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:43,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912618554] [2022-02-09 03:56:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:43,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:43,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:43,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912618554] [2022-02-09 03:56:43,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912618554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:43,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796793665] [2022-02-09 03:56:43,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:56:43,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:43,695 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) [2022-02-09 03:56:43,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-09 03:56:43,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 03:56:43,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:43,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:56:43,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:43,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:56:44,123 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 15 treesize of output 7 [2022-02-09 03:56:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:44,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:45,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:45,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:45,562 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:45,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:45,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796793665] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:45,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:45,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:56:45,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070752515] [2022-02-09 03:56:45,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:45,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:56:45,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:56:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:56:45,792 INFO L87 Difference]: Start difference. First operand 7218 states and 21859 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:48,625 INFO L93 Difference]: Finished difference Result 15413 states and 46036 transitions. [2022-02-09 03:56:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-09 03:56:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:48,659 INFO L225 Difference]: With dead ends: 15413 [2022-02-09 03:56:48,659 INFO L226 Difference]: Without dead ends: 15179 [2022-02-09 03:56:48,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6430, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:56:48,660 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 397 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:48,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3096 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3695 Invalid, 0 Unknown, 292 Unchecked, 1.3s Time] [2022-02-09 03:56:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15179 states. [2022-02-09 03:56:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15179 to 7116. [2022-02-09 03:56:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7116 states, 7115 states have (on average 3.036261419536191) internal successors, (21603), 7115 states have internal predecessors, (21603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 21603 transitions. [2022-02-09 03:56:48,858 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 21603 transitions. Word has length 48 [2022-02-09 03:56:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:48,858 INFO L470 AbstractCegarLoop]: Abstraction has 7116 states and 21603 transitions. [2022-02-09 03:56:48,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 21603 transitions. [2022-02-09 03:56:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:48,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:48,868 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:48,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-09 03:56:49,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-02-09 03:56:49,068 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash 766644457, now seen corresponding path program 18 times [2022-02-09 03:56:49,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:49,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248464622] [2022-02-09 03:56:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:49,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:49,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:49,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248464622] [2022-02-09 03:56:49,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248464622] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:49,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763440338] [2022-02-09 03:56:49,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:56:49,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:49,609 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) [2022-02-09 03:56:49,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-09 03:56:49,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 03:56:49,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:56:49,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:49,847 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 15 treesize of output 7 [2022-02-09 03:56:50,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:56:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:50,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:51,443 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:51,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:56:51,579 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:51,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:51,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763440338] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:51,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:51,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:56:51,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268533993] [2022-02-09 03:56:51,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:56:51,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:56:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2647, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:56:51,815 INFO L87 Difference]: Start difference. First operand 7116 states and 21603 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:56:54,793 INFO L93 Difference]: Finished difference Result 12676 states and 38259 transitions. [2022-02-09 03:56:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:56:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:56:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:56:54,817 INFO L225 Difference]: With dead ends: 12676 [2022-02-09 03:56:54,817 INFO L226 Difference]: Without dead ends: 12641 [2022-02-09 03:56:54,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=557, Invalid=6085, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 03:56:54,818 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 343 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:56:54,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2699 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:56:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2022-02-09 03:56:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 7124. [2022-02-09 03:56:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0355187421030463) internal successors, (21622), 7123 states have internal predecessors, (21622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21622 transitions. [2022-02-09 03:56:54,956 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21622 transitions. Word has length 48 [2022-02-09 03:56:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:56:54,956 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21622 transitions. [2022-02-09 03:56:54,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:56:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21622 transitions. [2022-02-09 03:56:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:56:54,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:56:54,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:56:54,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-09 03:56:55,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:55,166 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:56:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:56:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1642826921, now seen corresponding path program 19 times [2022-02-09 03:56:55,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:56:55,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733820985] [2022-02-09 03:56:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:56:55,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:56:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:55,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:56:55,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733820985] [2022-02-09 03:56:55,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733820985] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:56:55,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828184804] [2022-02-09 03:56:55,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:56:55,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:56:55,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:56:55,756 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) [2022-02-09 03:56:55,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-09 03:56:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:56:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:56:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:56:55,985 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 15 treesize of output 7 [2022-02-09 03:56:56,177 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 15 treesize of output 7 [2022-02-09 03:56:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:56,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:56:57,491 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:57,491 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 34 treesize of output 36 [2022-02-09 03:56:57,611 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:56:57,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:56:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:56:57,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828184804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:56:57,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:56:57,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:56:57,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680113653] [2022-02-09 03:56:57,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:56:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:56:57,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:56:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:56:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:56:57,833 INFO L87 Difference]: Start difference. First operand 7124 states and 21622 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:00,560 INFO L93 Difference]: Finished difference Result 12707 states and 38318 transitions. [2022-02-09 03:57:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:00,561 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:00,616 INFO L225 Difference]: With dead ends: 12707 [2022-02-09 03:57:00,617 INFO L226 Difference]: Without dead ends: 12663 [2022-02-09 03:57:00,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=533, Invalid=5629, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 03:57:00,617 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 356 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:00,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2571 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3264 Invalid, 0 Unknown, 59 Unchecked, 1.2s Time] [2022-02-09 03:57:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12663 states. [2022-02-09 03:57:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12663 to 7120. [2022-02-09 03:57:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.0361005759235846) internal successors, (21614), 7119 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21614 transitions. [2022-02-09 03:57:00,746 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21614 transitions. Word has length 48 [2022-02-09 03:57:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:00,746 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21614 transitions. [2022-02-09 03:57:00,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21614 transitions. [2022-02-09 03:57:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:00,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:00,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:00,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:00,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:00,956 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -460309207, now seen corresponding path program 20 times [2022-02-09 03:57:00,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:00,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88810202] [2022-02-09 03:57:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:00,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:01,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:01,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88810202] [2022-02-09 03:57:01,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88810202] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:01,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695954169] [2022-02-09 03:57:01,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:57:01,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:01,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:01,481 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) [2022-02-09 03:57:01,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-09 03:57:01,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:57:01,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:01,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:01,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:01,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:01,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:03,108 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:03,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:03,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:03,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:03,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695954169] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:03,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:03,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:57:03,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165415325] [2022-02-09 03:57:03,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:03,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:57:03,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:57:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:57:03,559 INFO L87 Difference]: Start difference. First operand 7120 states and 21614 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:05,820 INFO L93 Difference]: Finished difference Result 15269 states and 45737 transitions. [2022-02-09 03:57:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:05,852 INFO L225 Difference]: With dead ends: 15269 [2022-02-09 03:57:05,852 INFO L226 Difference]: Without dead ends: 15234 [2022-02-09 03:57:05,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=482, Invalid=5680, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 03:57:05,853 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 298 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:05,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2215 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 03:57:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2022-02-09 03:57:06,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 7124. [2022-02-09 03:57:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0355187421030463) internal successors, (21622), 7123 states have internal predecessors, (21622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21622 transitions. [2022-02-09 03:57:06,066 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21622 transitions. Word has length 48 [2022-02-09 03:57:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:06,066 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21622 transitions. [2022-02-09 03:57:06,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21622 transitions. [2022-02-09 03:57:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:06,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:06,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:06,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:06,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:06,277 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2001740685, now seen corresponding path program 21 times [2022-02-09 03:57:06,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:06,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471577434] [2022-02-09 03:57:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:06,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:06,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:06,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471577434] [2022-02-09 03:57:06,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471577434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:06,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540398098] [2022-02-09 03:57:06,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:57:06,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:06,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:06,817 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) [2022-02-09 03:57:06,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-09 03:57:06,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 03:57:06,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:06,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:57:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:07,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:07,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:07,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:08,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:08,602 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 34 treesize of output 36 [2022-02-09 03:57:08,732 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:08,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:08,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540398098] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:08,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:08,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:57:08,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983393415] [2022-02-09 03:57:08,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:08,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:57:08,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:57:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:57:08,994 INFO L87 Difference]: Start difference. First operand 7124 states and 21622 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:11,414 INFO L93 Difference]: Finished difference Result 15273 states and 45743 transitions. [2022-02-09 03:57:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:11,442 INFO L225 Difference]: With dead ends: 15273 [2022-02-09 03:57:11,442 INFO L226 Difference]: Without dead ends: 15230 [2022-02-09 03:57:11,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=482, Invalid=5680, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 03:57:11,443 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 313 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:11,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2366 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:57:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2022-02-09 03:57:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 7120. [2022-02-09 03:57:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.035819637589549) internal successors, (21612), 7119 states have internal predecessors, (21612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21612 transitions. [2022-02-09 03:57:11,623 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21612 transitions. Word has length 48 [2022-02-09 03:57:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:11,623 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21612 transitions. [2022-02-09 03:57:11,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21612 transitions. [2022-02-09 03:57:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:11,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:11,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:11,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-09 03:57:11,834 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,SelfDestructingSolverStorable112 [2022-02-09 03:57:11,834 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1145793037, now seen corresponding path program 22 times [2022-02-09 03:57:11,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:11,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368812943] [2022-02-09 03:57:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:11,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:12,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:12,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368812943] [2022-02-09 03:57:12,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368812943] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:12,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372460803] [2022-02-09 03:57:12,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:57:12,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:12,501 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) [2022-02-09 03:57:12,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-09 03:57:12,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:57:12,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:12,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:12,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:12,724 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 15 treesize of output 7 [2022-02-09 03:57:12,913 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 15 treesize of output 7 [2022-02-09 03:57:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:13,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:14,231 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:14,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:14,360 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:14,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:14,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372460803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:14,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:14,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:57:14,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869802307] [2022-02-09 03:57:14,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:14,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:57:14,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:57:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:57:14,593 INFO L87 Difference]: Start difference. First operand 7120 states and 21612 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:17,565 INFO L93 Difference]: Finished difference Result 12712 states and 38324 transitions. [2022-02-09 03:57:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:57:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:17,590 INFO L225 Difference]: With dead ends: 12712 [2022-02-09 03:57:17,590 INFO L226 Difference]: Without dead ends: 12672 [2022-02-09 03:57:17,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=550, Invalid=5930, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:57:17,591 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 369 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:17,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2701 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3751 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 03:57:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12672 states. [2022-02-09 03:57:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12672 to 7126. [2022-02-09 03:57:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0350877192982457) internal successors, (21625), 7125 states have internal predecessors, (21625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21625 transitions. [2022-02-09 03:57:17,732 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21625 transitions. Word has length 48 [2022-02-09 03:57:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21625 transitions. [2022-02-09 03:57:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21625 transitions. [2022-02-09 03:57:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:17,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:17,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:17,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:17,943 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,SelfDestructingSolverStorable113 [2022-02-09 03:57:17,943 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -520605549, now seen corresponding path program 23 times [2022-02-09 03:57:17,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:17,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346521115] [2022-02-09 03:57:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:17,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:18,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:18,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346521115] [2022-02-09 03:57:18,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346521115] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:18,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357557780] [2022-02-09 03:57:18,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:57:18,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:18,469 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) [2022-02-09 03:57:18,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-09 03:57:18,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 03:57:18,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:18,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:57:18,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:18,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:18,916 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 15 treesize of output 7 [2022-02-09 03:57:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:19,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:20,313 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:20,313 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:20,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:20,449 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:20,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357557780] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:20,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:20,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:57:20,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22975533] [2022-02-09 03:57:20,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:20,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:57:20,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:57:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:57:20,690 INFO L87 Difference]: Start difference. First operand 7126 states and 21625 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:23,339 INFO L93 Difference]: Finished difference Result 12670 states and 38238 transitions. [2022-02-09 03:57:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:23,365 INFO L225 Difference]: With dead ends: 12670 [2022-02-09 03:57:23,365 INFO L226 Difference]: Without dead ends: 12623 [2022-02-09 03:57:23,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1987 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=518, Invalid=5802, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 03:57:23,366 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 352 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:23,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2096 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 03:57:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-09 03:57:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-09 03:57:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.0359702121680483) internal successors, (21607), 7117 states have internal predecessors, (21607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21607 transitions. [2022-02-09 03:57:23,513 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21607 transitions. Word has length 48 [2022-02-09 03:57:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:23,514 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21607 transitions. [2022-02-09 03:57:23,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21607 transitions. [2022-02-09 03:57:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:23,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:23,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:23,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:23,724 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,SelfDestructingSolverStorable114 [2022-02-09 03:57:23,724 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1406766659, now seen corresponding path program 24 times [2022-02-09 03:57:23,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:23,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605841707] [2022-02-09 03:57:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:23,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:24,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:24,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605841707] [2022-02-09 03:57:24,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605841707] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:24,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988519193] [2022-02-09 03:57:24,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:57:24,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:24,287 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) [2022-02-09 03:57:24,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-09 03:57:24,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 03:57:24,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:24,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:24,517 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 15 treesize of output 7 [2022-02-09 03:57:24,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:25,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:25,997 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:25,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:26,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:26,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:26,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988519193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:26,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:26,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:26,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389749077] [2022-02-09 03:57:26,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:26,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:26,353 INFO L87 Difference]: Start difference. First operand 7118 states and 21607 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:28,992 INFO L93 Difference]: Finished difference Result 15326 states and 45856 transitions. [2022-02-09 03:57:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:57:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:29,019 INFO L225 Difference]: With dead ends: 15326 [2022-02-09 03:57:29,019 INFO L226 Difference]: Without dead ends: 15291 [2022-02-09 03:57:29,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=553, Invalid=6419, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:57:29,027 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 363 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 3207 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:29,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2570 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3207 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:57:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15291 states. [2022-02-09 03:57:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 7126. [2022-02-09 03:57:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0350877192982457) internal successors, (21625), 7125 states have internal predecessors, (21625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21625 transitions. [2022-02-09 03:57:29,190 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21625 transitions. Word has length 48 [2022-02-09 03:57:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21625 transitions. [2022-02-09 03:57:29,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21625 transitions. [2022-02-09 03:57:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:29,200 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:29,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:29,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-09 03:57:29,400 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,SelfDestructingSolverStorable115 [2022-02-09 03:57:29,400 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:29,401 INFO L85 PathProgramCache]: Analyzing trace with hash -530584195, now seen corresponding path program 25 times [2022-02-09 03:57:29,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:29,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527723170] [2022-02-09 03:57:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:29,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:29,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:29,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527723170] [2022-02-09 03:57:29,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527723170] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:29,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246332452] [2022-02-09 03:57:29,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:57:29,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:29,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:29,937 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) [2022-02-09 03:57:29,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-09 03:57:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:29,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:29,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:30,178 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 15 treesize of output 7 [2022-02-09 03:57:30,380 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 15 treesize of output 7 [2022-02-09 03:57:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:30,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:31,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:31,765 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 34 treesize of output 36 [2022-02-09 03:57:31,902 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:31,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:32,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246332452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:32,142 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:32,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:32,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230023137] [2022-02-09 03:57:32,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:32,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:32,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:32,143 INFO L87 Difference]: Start difference. First operand 7126 states and 21625 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:34,983 INFO L93 Difference]: Finished difference Result 12684 states and 38274 transitions. [2022-02-09 03:57:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:35,010 INFO L225 Difference]: With dead ends: 12684 [2022-02-09 03:57:35,010 INFO L226 Difference]: Without dead ends: 12623 [2022-02-09 03:57:35,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=546, Invalid=6096, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 03:57:35,010 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 376 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 3549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:35,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2658 Invalid, 3549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:57:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-09 03:57:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-09 03:57:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.0358297035267667) internal successors, (21606), 7117 states have internal predecessors, (21606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21606 transitions. [2022-02-09 03:57:35,158 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21606 transitions. Word has length 48 [2022-02-09 03:57:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:35,158 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21606 transitions. [2022-02-09 03:57:35,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21606 transitions. [2022-02-09 03:57:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:35,167 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:35,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:35,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:35,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:35,368 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash 743387921, now seen corresponding path program 26 times [2022-02-09 03:57:35,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:35,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246672698] [2022-02-09 03:57:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:35,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:35,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:35,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246672698] [2022-02-09 03:57:35,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246672698] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:35,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666511399] [2022-02-09 03:57:35,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:57:35,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:35,898 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) [2022-02-09 03:57:35,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-09 03:57:35,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:57:35,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:35,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:35,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:36,132 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 15 treesize of output 7 [2022-02-09 03:57:36,326 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 15 treesize of output 7 [2022-02-09 03:57:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:36,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:37,757 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:37,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:37,883 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:37,883 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 37 treesize of output 39 [2022-02-09 03:57:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:38,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666511399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:38,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:38,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:38,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128967003] [2022-02-09 03:57:38,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:38,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:38,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:38,141 INFO L87 Difference]: Start difference. First operand 7118 states and 21606 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:40,879 INFO L93 Difference]: Finished difference Result 12769 states and 38446 transitions. [2022-02-09 03:57:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-09 03:57:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:40,902 INFO L225 Difference]: With dead ends: 12769 [2022-02-09 03:57:40,902 INFO L226 Difference]: Without dead ends: 12676 [2022-02-09 03:57:40,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=581, Invalid=6559, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:57:40,902 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 456 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:40,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 2191 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2760 Invalid, 0 Unknown, 115 Unchecked, 1.1s Time] [2022-02-09 03:57:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12676 states. [2022-02-09 03:57:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12676 to 7130. [2022-02-09 03:57:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.0343666713424042) internal successors, (21632), 7129 states have internal predecessors, (21632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21632 transitions. [2022-02-09 03:57:41,035 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21632 transitions. Word has length 48 [2022-02-09 03:57:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21632 transitions. [2022-02-09 03:57:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21632 transitions. [2022-02-09 03:57:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:41,044 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:41,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:41,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-02-09 03:57:41,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:41,246 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash -923010665, now seen corresponding path program 27 times [2022-02-09 03:57:41,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:41,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942940416] [2022-02-09 03:57:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:41,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:41,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:41,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942940416] [2022-02-09 03:57:41,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942940416] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:41,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26750459] [2022-02-09 03:57:41,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:57:41,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:41,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:41,785 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) [2022-02-09 03:57:41,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-09 03:57:41,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-09 03:57:41,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:41,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:57:41,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:42,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:42,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:42,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:43,511 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:43,511 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 34 treesize of output 36 [2022-02-09 03:57:43,642 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:43,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:43,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26750459] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:43,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:43,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:43,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009492823] [2022-02-09 03:57:43,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:43,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:43,865 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:43,865 INFO L87 Difference]: Start difference. First operand 7130 states and 21632 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:46,396 INFO L93 Difference]: Finished difference Result 15279 states and 45753 transitions. [2022-02-09 03:57:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:46,397 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:46,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:46,429 INFO L225 Difference]: With dead ends: 15279 [2022-02-09 03:57:46,429 INFO L226 Difference]: Without dead ends: 15226 [2022-02-09 03:57:46,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=506, Invalid=5974, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:57:46,430 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 327 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:46,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2633 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:57:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15226 states. [2022-02-09 03:57:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15226 to 7116. [2022-02-09 03:57:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7116 states, 7115 states have (on average 3.0359803232607168) internal successors, (21601), 7115 states have internal predecessors, (21601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 21601 transitions. [2022-02-09 03:57:46,633 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 21601 transitions. Word has length 48 [2022-02-09 03:57:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:46,633 INFO L470 AbstractCegarLoop]: Abstraction has 7116 states and 21601 transitions. [2022-02-09 03:57:46,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 21601 transitions. [2022-02-09 03:57:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:46,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:46,643 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:46,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-09 03:57:46,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-09 03:57:46,843 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1950075915, now seen corresponding path program 28 times [2022-02-09 03:57:46,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:46,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268276314] [2022-02-09 03:57:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:46,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:47,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:47,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268276314] [2022-02-09 03:57:47,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268276314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:47,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534237645] [2022-02-09 03:57:47,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:57:47,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:47,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:47,377 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) [2022-02-09 03:57:47,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-09 03:57:47,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:57:47,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:47,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:47,624 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 15 treesize of output 7 [2022-02-09 03:57:47,819 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 15 treesize of output 7 [2022-02-09 03:57:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:48,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:49,124 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:49,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:49,283 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:49,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:49,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534237645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:49,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:49,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:49,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930287977] [2022-02-09 03:57:49,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:49,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:49,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:49,543 INFO L87 Difference]: Start difference. First operand 7116 states and 21601 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:52,140 INFO L93 Difference]: Finished difference Result 15307 states and 45808 transitions. [2022-02-09 03:57:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:57:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:52,174 INFO L225 Difference]: With dead ends: 15307 [2022-02-09 03:57:52,174 INFO L226 Difference]: Without dead ends: 15272 [2022-02-09 03:57:52,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=514, Invalid=6128, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 03:57:52,175 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 365 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:52,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2582 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 03:57:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-02-09 03:57:52,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 7120. [2022-02-09 03:57:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.035257760921478) internal successors, (21608), 7119 states have internal predecessors, (21608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21608 transitions. [2022-02-09 03:57:52,380 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21608 transitions. Word has length 48 [2022-02-09 03:57:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21608 transitions. [2022-02-09 03:57:52,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21608 transitions. [2022-02-09 03:57:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:52,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:52,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:52,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-09 03:57:52,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:52,590 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1468708917, now seen corresponding path program 29 times [2022-02-09 03:57:52,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:52,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730545175] [2022-02-09 03:57:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:52,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:53,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:53,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730545175] [2022-02-09 03:57:53,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730545175] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:53,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822956545] [2022-02-09 03:57:53,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:57:53,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:53,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:53,136 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) [2022-02-09 03:57:53,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-09 03:57:53,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-09 03:57:53,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:53,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:57:53,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:53,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:57:53,554 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 15 treesize of output 7 [2022-02-09 03:57:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:54,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:57:54,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:54,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:57:55,098 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:57:55,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:57:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:55,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822956545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:57:55,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:57:55,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:57:55,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831783200] [2022-02-09 03:57:55,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:57:55,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:57:55,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:57:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:57:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:57:55,359 INFO L87 Difference]: Start difference. First operand 7120 states and 21608 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:57:58,348 INFO L93 Difference]: Finished difference Result 12665 states and 38226 transitions. [2022-02-09 03:57:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:57:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:57:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:57:58,373 INFO L225 Difference]: With dead ends: 12665 [2022-02-09 03:57:58,373 INFO L226 Difference]: Without dead ends: 12613 [2022-02-09 03:57:58,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=546, Invalid=6096, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 03:57:58,374 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 401 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:57:58,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2835 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:57:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12613 states. [2022-02-09 03:57:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12613 to 7108. [2022-02-09 03:57:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7107 states have (on average 3.0372871816518927) internal successors, (21586), 7107 states have internal predecessors, (21586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 21586 transitions. [2022-02-09 03:57:58,555 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 21586 transitions. Word has length 48 [2022-02-09 03:57:58,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:57:58,556 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 21586 transitions. [2022-02-09 03:57:58,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:57:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 21586 transitions. [2022-02-09 03:57:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:57:58,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:57:58,566 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:57:58,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-09 03:57:58,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:58,767 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:57:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:57:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1340281267, now seen corresponding path program 30 times [2022-02-09 03:57:58,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:57:58,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123641847] [2022-02-09 03:57:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:57:58,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:57:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:57:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:57:59,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:57:59,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123641847] [2022-02-09 03:57:59,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123641847] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:57:59,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904986250] [2022-02-09 03:57:59,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:57:59,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:57:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:57:59,310 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) [2022-02-09 03:57:59,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-09 03:57:59,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-09 03:57:59,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:57:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:57:59,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:57:59,544 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 15 treesize of output 7 [2022-02-09 03:57:59,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:00,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:01,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:01,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:01,226 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:01,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:58:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:01,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904986250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:01,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:01,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:58:01,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407558449] [2022-02-09 03:58:01,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:01,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:58:01,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:01,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:58:01,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2750, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:58:01,493 INFO L87 Difference]: Start difference. First operand 7108 states and 21586 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:04,451 INFO L93 Difference]: Finished difference Result 12700 states and 38298 transitions. [2022-02-09 03:58:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 03:58:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:04,477 INFO L225 Difference]: With dead ends: 12700 [2022-02-09 03:58:04,478 INFO L226 Difference]: Without dead ends: 12660 [2022-02-09 03:58:04,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=599, Invalid=6541, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:58:04,479 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 412 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:04,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2615 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:58:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12660 states. [2022-02-09 03:58:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12660 to 7114. [2022-02-09 03:58:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7114 states, 7113 states have (on average 3.0365527906649796) internal successors, (21599), 7113 states have internal predecessors, (21599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 21599 transitions. [2022-02-09 03:58:04,677 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 21599 transitions. Word has length 48 [2022-02-09 03:58:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:04,677 INFO L470 AbstractCegarLoop]: Abstraction has 7114 states and 21599 transitions. [2022-02-09 03:58:04,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 21599 transitions. [2022-02-09 03:58:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:04,687 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:04,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:04,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-09 03:58:04,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-02-09 03:58:04,887 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1288287443, now seen corresponding path program 31 times [2022-02-09 03:58:04,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:04,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579382212] [2022-02-09 03:58:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:04,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:05,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579382212] [2022-02-09 03:58:05,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579382212] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393881992] [2022-02-09 03:58:05,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:58:05,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:05,414 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) [2022-02-09 03:58:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-09 03:58:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:05,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:05,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:05,666 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 15 treesize of output 7 [2022-02-09 03:58:05,860 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 15 treesize of output 7 [2022-02-09 03:58:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:06,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:07,256 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:07,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:07,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:07,390 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 37 treesize of output 39 [2022-02-09 03:58:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:07,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393881992] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:07,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:07,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:58:07,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932312496] [2022-02-09 03:58:07,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:07,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:58:07,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:58:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:58:07,636 INFO L87 Difference]: Start difference. First operand 7114 states and 21599 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:10,151 INFO L93 Difference]: Finished difference Result 15263 states and 45720 transitions. [2022-02-09 03:58:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 03:58:10,151 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:10,181 INFO L225 Difference]: With dead ends: 15263 [2022-02-09 03:58:10,182 INFO L226 Difference]: Without dead ends: 15175 [2022-02-09 03:58:10,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 52 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=506, Invalid=5974, Unknown=0, NotChecked=0, Total=6480 [2022-02-09 03:58:10,182 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 324 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:10,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2470 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:58:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15175 states. [2022-02-09 03:58:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15175 to 7065. [2022-02-09 03:58:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7065 states, 7064 states have (on average 3.042893544733862) internal successors, (21495), 7064 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 21495 transitions. [2022-02-09 03:58:10,369 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 21495 transitions. Word has length 48 [2022-02-09 03:58:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:10,369 INFO L470 AbstractCegarLoop]: Abstraction has 7065 states and 21495 transitions. [2022-02-09 03:58:10,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 21495 transitions. [2022-02-09 03:58:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:10,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:10,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:10,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-09 03:58:10,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-09 03:58:10,580 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -651900585, now seen corresponding path program 32 times [2022-02-09 03:58:10,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:10,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886551791] [2022-02-09 03:58:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:10,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:11,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:11,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886551791] [2022-02-09 03:58:11,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886551791] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:11,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496367153] [2022-02-09 03:58:11,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:58:11,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:11,145 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) [2022-02-09 03:58:11,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-09 03:58:11,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:58:11,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:11,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:11,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:11,361 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 15 treesize of output 7 [2022-02-09 03:58:11,548 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 15 treesize of output 7 [2022-02-09 03:58:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:12,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:12,804 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:12,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:12,929 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:12,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:58:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:13,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496367153] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:13,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:13,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:58:13,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455615232] [2022-02-09 03:58:13,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:13,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:58:13,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:58:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:58:13,183 INFO L87 Difference]: Start difference. First operand 7065 states and 21495 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:16,407 INFO L93 Difference]: Finished difference Result 16603 states and 49685 transitions. [2022-02-09 03:58:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 03:58:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:16,439 INFO L225 Difference]: With dead ends: 16603 [2022-02-09 03:58:16,440 INFO L226 Difference]: Without dead ends: 16446 [2022-02-09 03:58:16,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=648, Invalid=7184, Unknown=0, NotChecked=0, Total=7832 [2022-02-09 03:58:16,441 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 471 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:16,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 2556 Invalid, 3766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 03:58:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16446 states. [2022-02-09 03:58:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16446 to 7131. [2022-02-09 03:58:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7131 states, 7130 states have (on average 3.038849929873773) internal successors, (21667), 7130 states have internal predecessors, (21667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 21667 transitions. [2022-02-09 03:58:16,622 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 21667 transitions. Word has length 48 [2022-02-09 03:58:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:16,622 INFO L470 AbstractCegarLoop]: Abstraction has 7131 states and 21667 transitions. [2022-02-09 03:58:16,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 21667 transitions. [2022-02-09 03:58:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:16,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:16,631 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:16,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-09 03:58:16,832 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,SelfDestructingSolverStorable123 [2022-02-09 03:58:16,832 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:16,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1420632681, now seen corresponding path program 33 times [2022-02-09 03:58:16,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:16,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975570080] [2022-02-09 03:58:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:16,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:17,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:17,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975570080] [2022-02-09 03:58:17,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975570080] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:17,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640369802] [2022-02-09 03:58:17,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:58:17,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:17,383 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) [2022-02-09 03:58:17,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-09 03:58:17,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:58:17,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:17,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:17,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:17,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:17,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:18,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:19,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:19,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-09 03:58:19,408 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:19,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-09 03:58:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:19,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640369802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:19,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:19,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 59 [2022-02-09 03:58:19,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591373329] [2022-02-09 03:58:19,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:19,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-09 03:58:19,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-09 03:58:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3241, Unknown=0, NotChecked=0, Total=3540 [2022-02-09 03:58:19,662 INFO L87 Difference]: Start difference. First operand 7131 states and 21667 transitions. Second operand has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:23,629 INFO L93 Difference]: Finished difference Result 18578 states and 55764 transitions. [2022-02-09 03:58:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-09 03:58:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:23,669 INFO L225 Difference]: With dead ends: 18578 [2022-02-09 03:58:23,669 INFO L226 Difference]: Without dead ends: 18543 [2022-02-09 03:58:23,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3089 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=895, Invalid=9407, Unknown=0, NotChecked=0, Total=10302 [2022-02-09 03:58:23,670 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 567 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 4672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:23,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2909 Invalid, 4672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 4507 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-09 03:58:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18543 states. [2022-02-09 03:58:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18543 to 7188. [2022-02-09 03:58:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.0333936273827744) internal successors, (21801), 7187 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 21801 transitions. [2022-02-09 03:58:23,884 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 21801 transitions. Word has length 48 [2022-02-09 03:58:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:23,884 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 21801 transitions. [2022-02-09 03:58:23,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 21801 transitions. [2022-02-09 03:58:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:23,894 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:23,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:23,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-09 03:58:24,095 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,SelfDestructingSolverStorable124 [2022-02-09 03:58:24,095 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:24,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -544450217, now seen corresponding path program 34 times [2022-02-09 03:58:24,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:24,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440353026] [2022-02-09 03:58:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:24,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:24,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:24,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440353026] [2022-02-09 03:58:24,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440353026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:24,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188367645] [2022-02-09 03:58:24,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:58:24,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:24,630 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) [2022-02-09 03:58:24,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-09 03:58:24,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:58:24,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:24,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:24,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:24,871 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 15 treesize of output 7 [2022-02-09 03:58:25,057 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 15 treesize of output 7 [2022-02-09 03:58:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:25,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:26,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:26,333 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 34 treesize of output 36 [2022-02-09 03:58:26,491 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:26,491 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 37 treesize of output 39 [2022-02-09 03:58:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:26,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188367645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:26,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:26,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:58:26,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379369714] [2022-02-09 03:58:26,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:26,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:58:26,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:58:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:58:26,720 INFO L87 Difference]: Start difference. First operand 7188 states and 21801 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:30,081 INFO L93 Difference]: Finished difference Result 13336 states and 40246 transitions. [2022-02-09 03:58:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 03:58:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:30,138 INFO L225 Difference]: With dead ends: 13336 [2022-02-09 03:58:30,138 INFO L226 Difference]: Without dead ends: 13292 [2022-02-09 03:58:30,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=650, Invalid=6660, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 03:58:30,139 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 389 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:30,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2535 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3629 Invalid, 0 Unknown, 70 Unchecked, 1.3s Time] [2022-02-09 03:58:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13292 states. [2022-02-09 03:58:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13292 to 7184. [2022-02-09 03:58:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7183 states have (on average 3.03355144090213) internal successors, (21790), 7183 states have internal predecessors, (21790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 21790 transitions. [2022-02-09 03:58:30,267 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 21790 transitions. Word has length 48 [2022-02-09 03:58:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 21790 transitions. [2022-02-09 03:58:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 21790 transitions. [2022-02-09 03:58:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:30,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:30,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:30,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-09 03:58:30,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:30,479 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1278917541, now seen corresponding path program 35 times [2022-02-09 03:58:30,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:30,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940040538] [2022-02-09 03:58:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:30,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:31,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:31,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940040538] [2022-02-09 03:58:31,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940040538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:31,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209105132] [2022-02-09 03:58:31,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:58:31,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:31,046 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) [2022-02-09 03:58:31,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-09 03:58:31,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:58:31,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:31,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:58:31,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:31,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:31,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:31,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:32,752 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:32,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:32,898 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:32,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:58:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:33,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209105132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:33,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:33,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:58:33,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083097025] [2022-02-09 03:58:33,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:33,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:58:33,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:58:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:58:33,125 INFO L87 Difference]: Start difference. First operand 7184 states and 21790 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:37,370 INFO L93 Difference]: Finished difference Result 16547 states and 49418 transitions. [2022-02-09 03:58:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-09 03:58:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:37,402 INFO L225 Difference]: With dead ends: 16547 [2022-02-09 03:58:37,402 INFO L226 Difference]: Without dead ends: 16442 [2022-02-09 03:58:37,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 59 SyntacticMatches, 15 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=731, Invalid=8389, Unknown=0, NotChecked=0, Total=9120 [2022-02-09 03:58:37,403 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 502 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 5152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:37,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 3369 Invalid, 5152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 4631 Invalid, 0 Unknown, 409 Unchecked, 1.7s Time] [2022-02-09 03:58:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16442 states. [2022-02-09 03:58:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16442 to 7190. [2022-02-09 03:58:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7190 states, 7189 states have (on average 3.032827931562109) internal successors, (21803), 7189 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7190 states to 7190 states and 21803 transitions. [2022-02-09 03:58:37,594 INFO L78 Accepts]: Start accepts. Automaton has 7190 states and 21803 transitions. Word has length 48 [2022-02-09 03:58:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:37,594 INFO L470 AbstractCegarLoop]: Abstraction has 7190 states and 21803 transitions. [2022-02-09 03:58:37,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7190 states and 21803 transitions. [2022-02-09 03:58:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:37,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:37,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:37,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-02-09 03:58:37,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:37,806 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1732902295, now seen corresponding path program 36 times [2022-02-09 03:58:37,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:37,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402647605] [2022-02-09 03:58:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:37,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:38,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:38,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402647605] [2022-02-09 03:58:38,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402647605] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:38,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634631360] [2022-02-09 03:58:38,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:58:38,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:38,341 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) [2022-02-09 03:58:38,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-09 03:58:38,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 03:58:38,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:38,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:58:38,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:38,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:38,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:58:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:39,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:39,994 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:39,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:40,127 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:40,128 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 37 treesize of output 39 [2022-02-09 03:58:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:40,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634631360] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:40,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:40,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:58:40,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889848784] [2022-02-09 03:58:40,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:40,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:58:40,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:58:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:58:40,369 INFO L87 Difference]: Start difference. First operand 7190 states and 21803 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:44,103 INFO L93 Difference]: Finished difference Result 16581 states and 49591 transitions. [2022-02-09 03:58:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-09 03:58:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:44,138 INFO L225 Difference]: With dead ends: 16581 [2022-02-09 03:58:44,138 INFO L226 Difference]: Without dead ends: 16483 [2022-02-09 03:58:44,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=676, Invalid=7514, Unknown=0, NotChecked=0, Total=8190 [2022-02-09 03:58:44,140 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 395 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 4350 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 4446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:44,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3073 Invalid, 4446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4350 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 03:58:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16483 states. [2022-02-09 03:58:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16483 to 7170. [2022-02-09 03:58:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7169 states have (on average 3.0352908355419164) internal successors, (21760), 7169 states have internal predecessors, (21760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 21760 transitions. [2022-02-09 03:58:44,318 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 21760 transitions. Word has length 48 [2022-02-09 03:58:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:44,318 INFO L470 AbstractCegarLoop]: Abstraction has 7170 states and 21760 transitions. [2022-02-09 03:58:44,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 21760 transitions. [2022-02-09 03:58:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:44,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:44,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:44,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-09 03:58:44,528 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,SelfDestructingSolverStorable127 [2022-02-09 03:58:44,528 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash -837756267, now seen corresponding path program 37 times [2022-02-09 03:58:44,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:44,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832665021] [2022-02-09 03:58:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:44,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:45,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:45,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832665021] [2022-02-09 03:58:45,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832665021] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:45,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620419803] [2022-02-09 03:58:45,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:58:45,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:45,063 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) [2022-02-09 03:58:45,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-09 03:58:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:45,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:45,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:45,282 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 15 treesize of output 7 [2022-02-09 03:58:45,496 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 15 treesize of output 7 [2022-02-09 03:58:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:46,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:46,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:46,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:46,877 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:46,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:58:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:47,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620419803] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:47,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:47,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:58:47,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774626558] [2022-02-09 03:58:47,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:47,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:58:47,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:58:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:58:47,099 INFO L87 Difference]: Start difference. First operand 7170 states and 21760 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:51,054 INFO L93 Difference]: Finished difference Result 13362 states and 39826 transitions. [2022-02-09 03:58:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-09 03:58:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:51,079 INFO L225 Difference]: With dead ends: 13362 [2022-02-09 03:58:51,079 INFO L226 Difference]: Without dead ends: 13141 [2022-02-09 03:58:51,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=753, Invalid=8559, Unknown=0, NotChecked=0, Total=9312 [2022-02-09 03:58:51,080 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 489 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 4691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:51,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2928 Invalid, 4691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4263 Invalid, 0 Unknown, 342 Unchecked, 1.6s Time] [2022-02-09 03:58:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13141 states. [2022-02-09 03:58:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13141 to 7230. [2022-02-09 03:58:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7229 states have (on average 3.028911329367824) internal successors, (21896), 7229 states have internal predecessors, (21896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 21896 transitions. [2022-02-09 03:58:51,230 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 21896 transitions. Word has length 48 [2022-02-09 03:58:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:51,230 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 21896 transitions. [2022-02-09 03:58:51,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 21896 transitions. [2022-02-09 03:58:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:51,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:51,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:51,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-09 03:58:51,441 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,SelfDestructingSolverStorable128 [2022-02-09 03:58:51,441 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -873389315, now seen corresponding path program 38 times [2022-02-09 03:58:51,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:51,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571158341] [2022-02-09 03:58:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:51,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:52,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:52,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571158341] [2022-02-09 03:58:52,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571158341] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:52,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507964967] [2022-02-09 03:58:52,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:58:52,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:52,059 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) [2022-02-09 03:58:52,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-09 03:58:52,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:58:52,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:58:52,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:52,285 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 15 treesize of output 7 [2022-02-09 03:58:52,474 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 15 treesize of output 7 [2022-02-09 03:58:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:53,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:58:53,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:53,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:58:53,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:58:53,922 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:58:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:54,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507964967] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:58:54,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:58:54,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:58:54,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878295224] [2022-02-09 03:58:54,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:58:54,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:58:54,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:58:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:58:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:58:54,156 INFO L87 Difference]: Start difference. First operand 7230 states and 21896 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:58:57,553 INFO L93 Difference]: Finished difference Result 13495 states and 40602 transitions. [2022-02-09 03:58:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 03:58:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:58:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:58:57,578 INFO L225 Difference]: With dead ends: 13495 [2022-02-09 03:58:57,579 INFO L226 Difference]: Without dead ends: 13455 [2022-02-09 03:58:57,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2245 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=657, Invalid=6825, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 03:58:57,579 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 428 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:58:57,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2354 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3514 Invalid, 0 Unknown, 192 Unchecked, 1.3s Time] [2022-02-09 03:58:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13455 states. [2022-02-09 03:58:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13455 to 7308. [2022-02-09 03:58:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 7307 states have (on average 3.0213493909949363) internal successors, (22077), 7307 states have internal predecessors, (22077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 22077 transitions. [2022-02-09 03:58:57,723 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 22077 transitions. Word has length 48 [2022-02-09 03:58:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:58:57,723 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 22077 transitions. [2022-02-09 03:58:57,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:58:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 22077 transitions. [2022-02-09 03:58:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:58:57,733 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:58:57,733 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:58:57,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-09 03:58:57,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-09 03:58:57,934 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:58:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:58:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1102148159, now seen corresponding path program 39 times [2022-02-09 03:58:57,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:58:57,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210271670] [2022-02-09 03:58:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:58:57,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:58:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:58:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:58,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:58:58,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210271670] [2022-02-09 03:58:58,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210271670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:58:58,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80878791] [2022-02-09 03:58:58,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:58:58,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:58:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:58:58,469 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) [2022-02-09 03:58:58,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-09 03:58:58,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:58:58,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:58:58,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-09 03:58:58,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:58:58,695 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 15 treesize of output 7 [2022-02-09 03:58:58,889 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 15 treesize of output 7 [2022-02-09 03:58:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:58:59,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:00,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:00,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:00,361 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:00,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:00,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80878791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:00,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:00,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:59:00,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373590591] [2022-02-09 03:59:00,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:00,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:59:00,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:59:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:59:00,587 INFO L87 Difference]: Start difference. First operand 7308 states and 22077 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:03,999 INFO L93 Difference]: Finished difference Result 16692 states and 49894 transitions. [2022-02-09 03:59:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 03:59:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:04,033 INFO L225 Difference]: With dead ends: 16692 [2022-02-09 03:59:04,033 INFO L226 Difference]: Without dead ends: 16647 [2022-02-09 03:59:04,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=651, Invalid=7005, Unknown=0, NotChecked=0, Total=7656 [2022-02-09 03:59:04,034 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 342 mSDsluCounter, 3758 mSDsCounter, 0 mSdLazyCounter, 4341 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 4341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:04,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2707 Invalid, 4440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 4341 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 03:59:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2022-02-09 03:59:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 7302. [2022-02-09 03:59:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7302 states, 7301 states have (on average 3.021229968497466) internal successors, (22058), 7301 states have internal predecessors, (22058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7302 states to 7302 states and 22058 transitions. [2022-02-09 03:59:04,289 INFO L78 Accepts]: Start accepts. Automaton has 7302 states and 22058 transitions. Word has length 48 [2022-02-09 03:59:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:04,289 INFO L470 AbstractCegarLoop]: Abstraction has 7302 states and 22058 transitions. [2022-02-09 03:59:04,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7302 states and 22058 transitions. [2022-02-09 03:59:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:04,299 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:04,299 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:04,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-09 03:59:04,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:04,511 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2048879959, now seen corresponding path program 40 times [2022-02-09 03:59:04,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:04,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897471556] [2022-02-09 03:59:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:04,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:05,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897471556] [2022-02-09 03:59:05,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897471556] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469185206] [2022-02-09 03:59:05,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:59:05,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:05,057 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:05,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-09 03:59:05,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:59:05,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:05,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:05,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:05,281 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 15 treesize of output 7 [2022-02-09 03:59:05,468 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 15 treesize of output 7 [2022-02-09 03:59:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:05,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:06,753 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:06,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:06,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:06,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:07,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469185206] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:07,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:07,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:59:07,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417481517] [2022-02-09 03:59:07,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:07,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:59:07,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:59:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:59:07,129 INFO L87 Difference]: Start difference. First operand 7302 states and 22058 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:10,451 INFO L93 Difference]: Finished difference Result 15766 states and 46905 transitions. [2022-02-09 03:59:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-09 03:59:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:10,480 INFO L225 Difference]: With dead ends: 15766 [2022-02-09 03:59:10,481 INFO L226 Difference]: Without dead ends: 15702 [2022-02-09 03:59:10,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 03:59:10,481 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 431 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:10,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 3018 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 4141 Invalid, 0 Unknown, 222 Unchecked, 1.5s Time] [2022-02-09 03:59:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15702 states. [2022-02-09 03:59:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15702 to 7334. [2022-02-09 03:59:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7334 states, 7333 states have (on average 3.0178644483840174) internal successors, (22130), 7333 states have internal predecessors, (22130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7334 states to 7334 states and 22130 transitions. [2022-02-09 03:59:10,661 INFO L78 Accepts]: Start accepts. Automaton has 7334 states and 22130 transitions. Word has length 48 [2022-02-09 03:59:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:10,661 INFO L470 AbstractCegarLoop]: Abstraction has 7334 states and 22130 transitions. [2022-02-09 03:59:10,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7334 states and 22130 transitions. [2022-02-09 03:59:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:10,672 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:10,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:10,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-02-09 03:59:10,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:10,872 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:10,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1901105241, now seen corresponding path program 41 times [2022-02-09 03:59:10,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:10,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005386757] [2022-02-09 03:59:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:10,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:11,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:11,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005386757] [2022-02-09 03:59:11,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005386757] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:11,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954874596] [2022-02-09 03:59:11,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:59:11,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:11,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:11,402 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:11,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-09 03:59:11,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:59:11,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:11,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 03:59:11,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:11,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:11,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:12,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:13,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:13,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-09 03:59:13,482 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:13,482 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 73 treesize of output 63 [2022-02-09 03:59:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:13,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954874596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:13,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:13,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 58 [2022-02-09 03:59:13,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429747091] [2022-02-09 03:59:13,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:13,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-09 03:59:13,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-09 03:59:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3125, Unknown=0, NotChecked=0, Total=3422 [2022-02-09 03:59:13,782 INFO L87 Difference]: Start difference. First operand 7334 states and 22130 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:17,904 INFO L93 Difference]: Finished difference Result 19273 states and 57399 transitions. [2022-02-09 03:59:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-09 03:59:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:17,941 INFO L225 Difference]: With dead ends: 19273 [2022-02-09 03:59:17,941 INFO L226 Difference]: Without dead ends: 19191 [2022-02-09 03:59:17,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=934, Invalid=9572, Unknown=0, NotChecked=0, Total=10506 [2022-02-09 03:59:17,942 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 547 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 4411 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:17,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 3119 Invalid, 4833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4411 Invalid, 0 Unknown, 263 Unchecked, 1.7s Time] [2022-02-09 03:59:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2022-02-09 03:59:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 7316. [2022-02-09 03:59:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 7315 states have (on average 3.019412166780588) internal successors, (22087), 7315 states have internal predecessors, (22087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 22087 transitions. [2022-02-09 03:59:18,142 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 22087 transitions. Word has length 48 [2022-02-09 03:59:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:18,142 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 22087 transitions. [2022-02-09 03:59:18,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 22087 transitions. [2022-02-09 03:59:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:18,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:18,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:18,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-09 03:59:18,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-02-09 03:59:18,353 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2091649819, now seen corresponding path program 42 times [2022-02-09 03:59:18,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:18,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083297762] [2022-02-09 03:59:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:18,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:18,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:18,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083297762] [2022-02-09 03:59:18,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083297762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:18,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614985871] [2022-02-09 03:59:18,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:59:18,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:18,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:18,922 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:18,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-09 03:59:18,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 03:59:18,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:18,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:59:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:19,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:19,339 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 11 treesize of output 7 [2022-02-09 03:59:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:19,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:20,702 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:20,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:20,829 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:20,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:21,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614985871] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:21,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:21,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 03:59:21,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863086988] [2022-02-09 03:59:21,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:21,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 03:59:21,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 03:59:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 03:59:21,063 INFO L87 Difference]: Start difference. First operand 7316 states and 22087 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:24,834 INFO L93 Difference]: Finished difference Result 16851 states and 50189 transitions. [2022-02-09 03:59:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 03:59:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:24,868 INFO L225 Difference]: With dead ends: 16851 [2022-02-09 03:59:24,868 INFO L226 Difference]: Without dead ends: 16629 [2022-02-09 03:59:24,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=684, Invalid=7688, Unknown=0, NotChecked=0, Total=8372 [2022-02-09 03:59:24,869 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 443 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 4295 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:24,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 3056 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4295 Invalid, 0 Unknown, 354 Unchecked, 1.6s Time] [2022-02-09 03:59:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16629 states. [2022-02-09 03:59:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16629 to 7266. [2022-02-09 03:59:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 3.021885753613214) internal successors, (21954), 7265 states have internal predecessors, (21954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 21954 transitions. [2022-02-09 03:59:25,056 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 21954 transitions. Word has length 48 [2022-02-09 03:59:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:25,056 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 21954 transitions. [2022-02-09 03:59:25,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 21954 transitions. [2022-02-09 03:59:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:25,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:25,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:25,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-02-09 03:59:25,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-09 03:59:25,267 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -307920015, now seen corresponding path program 43 times [2022-02-09 03:59:25,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:25,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244935664] [2022-02-09 03:59:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:25,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:25,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:25,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244935664] [2022-02-09 03:59:25,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244935664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:25,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555609576] [2022-02-09 03:59:25,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 03:59:25,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:25,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:25,834 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:25,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-09 03:59:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:25,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:25,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:26,054 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 15 treesize of output 7 [2022-02-09 03:59:26,243 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 15 treesize of output 7 [2022-02-09 03:59:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:26,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:27,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:27,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:27,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:27,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:27,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555609576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:27,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:27,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:59:27,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868380064] [2022-02-09 03:59:27,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:27,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:59:27,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:59:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:59:27,860 INFO L87 Difference]: Start difference. First operand 7266 states and 21954 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:31,054 INFO L93 Difference]: Finished difference Result 13429 states and 40437 transitions. [2022-02-09 03:59:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 03:59:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:31,079 INFO L225 Difference]: With dead ends: 13429 [2022-02-09 03:59:31,080 INFO L226 Difference]: Without dead ends: 13394 [2022-02-09 03:59:31,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=637, Invalid=6503, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 03:59:31,080 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 428 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:31,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2110 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 03:59:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13394 states. [2022-02-09 03:59:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13394 to 7274. [2022-02-09 03:59:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7273 states have (on average 3.0211742059672764) internal successors, (21973), 7273 states have internal predecessors, (21973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 21973 transitions. [2022-02-09 03:59:31,226 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 21973 transitions. Word has length 48 [2022-02-09 03:59:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:31,226 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 21973 transitions. [2022-02-09 03:59:31,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 21973 transitions. [2022-02-09 03:59:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:31,236 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:31,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:31,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-09 03:59:31,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-09 03:59:31,436 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 568262449, now seen corresponding path program 44 times [2022-02-09 03:59:31,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:31,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483134409] [2022-02-09 03:59:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:31,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:31,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:31,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483134409] [2022-02-09 03:59:31,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483134409] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:31,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974739841] [2022-02-09 03:59:31,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 03:59:31,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:31,967 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:31,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-09 03:59:31,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 03:59:31,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:31,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:31,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:32,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:32,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:32,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:33,679 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:33,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:33,814 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:33,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:34,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974739841] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:34,053 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:34,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:59:34,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417608029] [2022-02-09 03:59:34,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:34,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:59:34,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:59:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:59:34,055 INFO L87 Difference]: Start difference. First operand 7274 states and 21973 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:37,615 INFO L93 Difference]: Finished difference Result 13463 states and 40498 transitions. [2022-02-09 03:59:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 03:59:37,615 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:37,640 INFO L225 Difference]: With dead ends: 13463 [2022-02-09 03:59:37,640 INFO L226 Difference]: Without dead ends: 13419 [2022-02-09 03:59:37,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=672, Invalid=6638, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 03:59:37,641 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 436 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:37,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2595 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 03:59:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13419 states. [2022-02-09 03:59:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13419 to 7270. [2022-02-09 03:59:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.021736139771633) internal successors, (21965), 7269 states have internal predecessors, (21965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21965 transitions. [2022-02-09 03:59:37,799 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21965 transitions. Word has length 48 [2022-02-09 03:59:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:37,799 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21965 transitions. [2022-02-09 03:59:37,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21965 transitions. [2022-02-09 03:59:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:37,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:37,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:37,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-09 03:59:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-09 03:59:38,010 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1534873679, now seen corresponding path program 45 times [2022-02-09 03:59:38,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:38,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486865104] [2022-02-09 03:59:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:38,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:38,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:38,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486865104] [2022-02-09 03:59:38,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486865104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:38,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083074370] [2022-02-09 03:59:38,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 03:59:38,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:38,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:38,546 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-09 03:59:38,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 03:59:38,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:38,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:38,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:38,771 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 11 treesize of output 7 [2022-02-09 03:59:39,044 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 15 treesize of output 7 [2022-02-09 03:59:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:39,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:40,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:40,359 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:40,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:40,511 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 42 treesize of output 42 [2022-02-09 03:59:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:40,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083074370] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:40,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:40,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-09 03:59:40,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813104669] [2022-02-09 03:59:40,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:40,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-09 03:59:40,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-09 03:59:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=3041, Unknown=0, NotChecked=0, Total=3306 [2022-02-09 03:59:40,751 INFO L87 Difference]: Start difference. First operand 7270 states and 21965 transitions. Second operand has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:45,553 INFO L93 Difference]: Finished difference Result 17850 states and 52759 transitions. [2022-02-09 03:59:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 03:59:45,553 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:45,587 INFO L225 Difference]: With dead ends: 17850 [2022-02-09 03:59:45,587 INFO L226 Difference]: Without dead ends: 17815 [2022-02-09 03:59:45,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2819 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=755, Invalid=8947, Unknown=0, NotChecked=0, Total=9702 [2022-02-09 03:59:45,588 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 376 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 6106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:45,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2892 Invalid, 6106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 6008 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-09 03:59:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17815 states. [2022-02-09 03:59:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17815 to 7274. [2022-02-09 03:59:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7273 states have (on average 3.0211742059672764) internal successors, (21973), 7273 states have internal predecessors, (21973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 21973 transitions. [2022-02-09 03:59:45,793 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 21973 transitions. Word has length 48 [2022-02-09 03:59:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:45,793 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 21973 transitions. [2022-02-09 03:59:45,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 21973 transitions. [2022-02-09 03:59:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:45,804 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:45,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:45,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-09 03:59:46,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-09 03:59:46,005 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 927176213, now seen corresponding path program 46 times [2022-02-09 03:59:46,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:46,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888632910] [2022-02-09 03:59:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:46,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:46,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:46,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888632910] [2022-02-09 03:59:46,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888632910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:46,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438742879] [2022-02-09 03:59:46,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 03:59:46,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:46,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:46,536 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:46,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-09 03:59:46,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 03:59:46,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:46,759 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 15 treesize of output 7 [2022-02-09 03:59:46,949 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 15 treesize of output 7 [2022-02-09 03:59:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:47,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:48,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:48,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:48,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:48,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 03:59:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:48,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438742879] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:48,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:48,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:59:48,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797345856] [2022-02-09 03:59:48,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:48,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:59:48,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:59:48,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:59:48,683 INFO L87 Difference]: Start difference. First operand 7274 states and 21973 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:51,585 INFO L93 Difference]: Finished difference Result 16658 states and 49790 transitions. [2022-02-09 03:59:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 03:59:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:51,620 INFO L225 Difference]: With dead ends: 16658 [2022-02-09 03:59:51,620 INFO L226 Difference]: Without dead ends: 16615 [2022-02-09 03:59:51,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=593, Invalid=6379, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:59:51,621 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 374 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:51,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2075 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 03:59:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16615 states. [2022-02-09 03:59:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16615 to 7270. [2022-02-09 03:59:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0214609987618655) internal successors, (21963), 7269 states have internal predecessors, (21963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21963 transitions. [2022-02-09 03:59:51,819 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21963 transitions. Word has length 48 [2022-02-09 03:59:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:51,820 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21963 transitions. [2022-02-09 03:59:51,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21963 transitions. [2022-02-09 03:59:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:51,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:51,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:51,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-02-09 03:59:52,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-02-09 03:59:52,030 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 71228565, now seen corresponding path program 47 times [2022-02-09 03:59:52,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:52,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099824192] [2022-02-09 03:59:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:52,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:52,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:52,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099824192] [2022-02-09 03:59:52,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099824192] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:52,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109328288] [2022-02-09 03:59:52,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 03:59:52,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:52,562 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:52,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-09 03:59:52,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 03:59:52,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:52,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 03:59:52,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:52,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:52,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:53,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 03:59:54,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:54,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 03:59:54,436 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 03:59:54,436 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 37 treesize of output 39 [2022-02-09 03:59:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:54,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109328288] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 03:59:54,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 03:59:54,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 03:59:54,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552696134] [2022-02-09 03:59:54,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 03:59:54,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 03:59:54,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:59:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 03:59:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 03:59:54,654 INFO L87 Difference]: Start difference. First operand 7270 states and 21963 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:59:58,139 INFO L93 Difference]: Finished difference Result 13462 states and 40500 transitions. [2022-02-09 03:59:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 03:59:58,139 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 03:59:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:59:58,167 INFO L225 Difference]: With dead ends: 13462 [2022-02-09 03:59:58,168 INFO L226 Difference]: Without dead ends: 13422 [2022-02-09 03:59:58,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 57 SyntacticMatches, 22 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=656, Invalid=6316, Unknown=0, NotChecked=0, Total=6972 [2022-02-09 03:59:58,168 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 424 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 03:59:58,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2248 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3310 Invalid, 0 Unknown, 111 Unchecked, 1.3s Time] [2022-02-09 03:59:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13422 states. [2022-02-09 03:59:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13422 to 7276. [2022-02-09 03:59:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 7275 states have (on average 3.0207560137457046) internal successors, (21976), 7275 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 21976 transitions. [2022-02-09 03:59:58,327 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 21976 transitions. Word has length 48 [2022-02-09 03:59:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:59:58,327 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 21976 transitions. [2022-02-09 03:59:58,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:59:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 21976 transitions. [2022-02-09 03:59:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 03:59:58,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:59:58,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:59:58,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-02-09 03:59:58,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:58,537 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 03:59:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:59:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1595170021, now seen corresponding path program 48 times [2022-02-09 03:59:58,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:59:58,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663514539] [2022-02-09 03:59:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:59:58,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:59:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:59:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:59:59,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:59:59,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663514539] [2022-02-09 03:59:59,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663514539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 03:59:59,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674010404] [2022-02-09 03:59:59,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 03:59:59,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 03:59:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 03:59:59,065 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 03:59:59,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-09 03:59:59,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 03:59:59,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 03:59:59,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 03:59:59,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 03:59:59,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 03:59:59,470 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 15 treesize of output 7 [2022-02-09 04:00:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:00,866 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:00,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:01,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:01,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:01,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674010404] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:01,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:01,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:00:01,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856573145] [2022-02-09 04:00:01,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:01,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:00:01,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:00:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:00:01,238 INFO L87 Difference]: Start difference. First operand 7276 states and 21976 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:04,410 INFO L93 Difference]: Finished difference Result 13423 states and 40416 transitions. [2022-02-09 04:00:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 04:00:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:04,434 INFO L225 Difference]: With dead ends: 13423 [2022-02-09 04:00:04,434 INFO L226 Difference]: Without dead ends: 13376 [2022-02-09 04:00:04,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=637, Invalid=6503, Unknown=0, NotChecked=0, Total=7140 [2022-02-09 04:00:04,434 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 414 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 3221 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:04,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1966 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3221 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:00:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2022-02-09 04:00:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 7268. [2022-02-09 04:00:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 3.0216045135544243) internal successors, (21958), 7267 states have internal predecessors, (21958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 21958 transitions. [2022-02-09 04:00:04,571 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 21958 transitions. Word has length 48 [2022-02-09 04:00:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:04,571 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 21958 transitions. [2022-02-09 04:00:04,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 21958 transitions. [2022-02-09 04:00:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:04,580 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:04,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:04,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-02-09 04:00:04,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-02-09 04:00:04,780 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1813636165, now seen corresponding path program 49 times [2022-02-09 04:00:04,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:04,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090165607] [2022-02-09 04:00:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:04,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:05,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:05,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090165607] [2022-02-09 04:00:05,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090165607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:05,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340941227] [2022-02-09 04:00:05,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:00:05,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:05,301 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:05,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-09 04:00:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:05,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:05,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:05,622 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 15 treesize of output 7 [2022-02-09 04:00:05,811 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 15 treesize of output 7 [2022-02-09 04:00:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:06,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:07,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:07,077 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 34 treesize of output 36 [2022-02-09 04:00:07,208 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:07,208 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:07,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340941227] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:07,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:07,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:07,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868771608] [2022-02-09 04:00:07,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:07,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:07,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:07,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:07,443 INFO L87 Difference]: Start difference. First operand 7268 states and 21958 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:10,609 INFO L93 Difference]: Finished difference Result 16711 states and 49903 transitions. [2022-02-09 04:00:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 04:00:10,609 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:10,640 INFO L225 Difference]: With dead ends: 16711 [2022-02-09 04:00:10,640 INFO L226 Difference]: Without dead ends: 16676 [2022-02-09 04:00:10,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=627, Invalid=6855, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 04:00:10,640 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 447 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:10,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 2425 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:00:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16676 states. [2022-02-09 04:00:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16676 to 7276. [2022-02-09 04:00:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 7275 states have (on average 3.0207560137457046) internal successors, (21976), 7275 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 21976 transitions. [2022-02-09 04:00:10,816 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 21976 transitions. Word has length 48 [2022-02-09 04:00:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:10,816 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 21976 transitions. [2022-02-09 04:00:10,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 21976 transitions. [2022-02-09 04:00:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:10,825 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:10,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:10,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-02-09 04:00:11,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:11,026 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:11,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:11,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1605148667, now seen corresponding path program 50 times [2022-02-09 04:00:11,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:11,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118007881] [2022-02-09 04:00:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:11,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:11,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:11,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118007881] [2022-02-09 04:00:11,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118007881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:11,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258966939] [2022-02-09 04:00:11,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:00:11,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:11,586 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:11,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-09 04:00:11,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:00:11,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:11,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:11,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:11,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:12,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:12,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:13,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:13,401 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 34 treesize of output 36 [2022-02-09 04:00:13,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:13,531 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 37 treesize of output 39 [2022-02-09 04:00:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:13,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258966939] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:13,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:13,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:13,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790936338] [2022-02-09 04:00:13,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:13,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:13,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:13,783 INFO L87 Difference]: Start difference. First operand 7276 states and 21976 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:17,236 INFO L93 Difference]: Finished difference Result 13477 states and 40533 transitions. [2022-02-09 04:00:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 04:00:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:17,270 INFO L225 Difference]: With dead ends: 13477 [2022-02-09 04:00:17,270 INFO L226 Difference]: Without dead ends: 13376 [2022-02-09 04:00:17,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=686, Invalid=7146, Unknown=0, NotChecked=0, Total=7832 [2022-02-09 04:00:17,271 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 458 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:17,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2252 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3322 Invalid, 0 Unknown, 64 Unchecked, 1.3s Time] [2022-02-09 04:00:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2022-02-09 04:00:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 7268. [2022-02-09 04:00:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 3.0214669051878356) internal successors, (21957), 7267 states have internal predecessors, (21957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 21957 transitions. [2022-02-09 04:00:17,448 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 21957 transitions. Word has length 48 [2022-02-09 04:00:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:17,449 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 21957 transitions. [2022-02-09 04:00:17,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 21957 transitions. [2022-02-09 04:00:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:17,460 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:17,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:17,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-02-09 04:00:17,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:17,664 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -331176551, now seen corresponding path program 51 times [2022-02-09 04:00:17,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:17,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834817624] [2022-02-09 04:00:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:17,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:18,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:18,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834817624] [2022-02-09 04:00:18,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834817624] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:18,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825041302] [2022-02-09 04:00:18,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:00:18,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:18,213 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:18,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-09 04:00:18,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:00:18,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:18,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 04:00:18,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:18,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:18,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:19,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:20,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:20,251 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-09 04:00:20,471 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:20,472 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-09 04:00:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:20,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825041302] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:20,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:20,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 58 [2022-02-09 04:00:20,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179241264] [2022-02-09 04:00:20,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:20,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-09 04:00:20,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-09 04:00:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-02-09 04:00:20,719 INFO L87 Difference]: Start difference. First operand 7268 states and 21957 transitions. Second operand has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:25,008 INFO L93 Difference]: Finished difference Result 16915 states and 50842 transitions. [2022-02-09 04:00:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-09 04:00:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:25,041 INFO L225 Difference]: With dead ends: 16915 [2022-02-09 04:00:25,042 INFO L226 Difference]: Without dead ends: 16836 [2022-02-09 04:00:25,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=957, Invalid=9143, Unknown=0, NotChecked=0, Total=10100 [2022-02-09 04:00:25,043 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 648 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 4768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:25,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 2795 Invalid, 4768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-09 04:00:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16836 states. [2022-02-09 04:00:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16836 to 7266. [2022-02-09 04:00:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 3.0216104611149346) internal successors, (21952), 7265 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 21952 transitions. [2022-02-09 04:00:25,205 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 21952 transitions. Word has length 48 [2022-02-09 04:00:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:25,205 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 21952 transitions. [2022-02-09 04:00:25,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 21952 transitions. [2022-02-09 04:00:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:25,215 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:25,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:25,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-02-09 04:00:25,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2022-02-09 04:00:25,416 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 875511443, now seen corresponding path program 52 times [2022-02-09 04:00:25,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:25,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621417064] [2022-02-09 04:00:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:25,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:25,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:25,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621417064] [2022-02-09 04:00:25,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621417064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:25,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118824004] [2022-02-09 04:00:25,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:00:25,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:25,975 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-09 04:00:26,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:00:26,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:26,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:26,220 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 15 treesize of output 7 [2022-02-09 04:00:26,413 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 15 treesize of output 7 [2022-02-09 04:00:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:27,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:27,771 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:27,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:27,898 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:27,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:28,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118824004] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:28,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:28,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:28,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86910907] [2022-02-09 04:00:28,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:28,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:28,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:28,131 INFO L87 Difference]: Start difference. First operand 7266 states and 21952 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:31,439 INFO L93 Difference]: Finished difference Result 16692 states and 49855 transitions. [2022-02-09 04:00:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-09 04:00:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:31,474 INFO L225 Difference]: With dead ends: 16692 [2022-02-09 04:00:31,474 INFO L226 Difference]: Without dead ends: 16657 [2022-02-09 04:00:31,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=627, Invalid=6855, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 04:00:31,475 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 422 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:31,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2457 Invalid, 3538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:00:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16657 states. [2022-02-09 04:00:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16657 to 7270. [2022-02-09 04:00:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0209107167423306) internal successors, (21959), 7269 states have internal predecessors, (21959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21959 transitions. [2022-02-09 04:00:31,685 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21959 transitions. Word has length 48 [2022-02-09 04:00:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:31,685 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21959 transitions. [2022-02-09 04:00:31,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21959 transitions. [2022-02-09 04:00:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:31,695 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:31,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:31,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-02-09 04:00:31,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:31,895 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1751693907, now seen corresponding path program 53 times [2022-02-09 04:00:31,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:31,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948730222] [2022-02-09 04:00:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:31,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:32,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:32,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948730222] [2022-02-09 04:00:32,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948730222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:32,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569816739] [2022-02-09 04:00:32,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:00:32,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:32,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:32,526 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:32,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-09 04:00:32,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:00:32,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:32,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 04:00:32,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:32,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:32,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:33,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:34,302 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:34,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:34,433 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:34,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:34,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569816739] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:34,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:34,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:34,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852554222] [2022-02-09 04:00:34,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:34,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:34,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:34,690 INFO L87 Difference]: Start difference. First operand 7270 states and 21959 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:38,297 INFO L93 Difference]: Finished difference Result 13418 states and 40404 transitions. [2022-02-09 04:00:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 04:00:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:38,325 INFO L225 Difference]: With dead ends: 13418 [2022-02-09 04:00:38,325 INFO L226 Difference]: Without dead ends: 13366 [2022-02-09 04:00:38,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=667, Invalid=6815, Unknown=0, NotChecked=0, Total=7482 [2022-02-09 04:00:38,326 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 414 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:38,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 2599 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3878 Invalid, 0 Unknown, 164 Unchecked, 1.5s Time] [2022-02-09 04:00:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2022-02-09 04:00:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 7258. [2022-02-09 04:00:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7258 states, 7257 states have (on average 3.0228744660327957) internal successors, (21937), 7257 states have internal predecessors, (21937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7258 states to 7258 states and 21937 transitions. [2022-02-09 04:00:38,517 INFO L78 Accepts]: Start accepts. Automaton has 7258 states and 21937 transitions. Word has length 48 [2022-02-09 04:00:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:38,517 INFO L470 AbstractCegarLoop]: Abstraction has 7258 states and 21937 transitions. [2022-02-09 04:00:38,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7258 states and 21937 transitions. [2022-02-09 04:00:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:38,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:38,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:38,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-02-09 04:00:38,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:38,726 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1880121557, now seen corresponding path program 54 times [2022-02-09 04:00:38,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:38,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419305432] [2022-02-09 04:00:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:38,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:39,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:39,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419305432] [2022-02-09 04:00:39,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419305432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:39,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264250572] [2022-02-09 04:00:39,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:00:39,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:39,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:39,264 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:39,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-09 04:00:39,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:00:39,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:39,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 04:00:39,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:39,490 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 11 treesize of output 7 [2022-02-09 04:00:39,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:00:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:40,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:41,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:41,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:41,187 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:41,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:41,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264250572] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:41,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:41,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:41,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192932566] [2022-02-09 04:00:41,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:41,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:41,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:41,437 INFO L87 Difference]: Start difference. First operand 7258 states and 21937 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:45,062 INFO L93 Difference]: Finished difference Result 13482 states and 40522 transitions. [2022-02-09 04:00:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-09 04:00:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:45,091 INFO L225 Difference]: With dead ends: 13482 [2022-02-09 04:00:45,091 INFO L226 Difference]: Without dead ends: 13413 [2022-02-09 04:00:45,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=701, Invalid=7309, Unknown=0, NotChecked=0, Total=8010 [2022-02-09 04:00:45,092 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 460 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:45,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2613 Invalid, 4188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3972 Invalid, 0 Unknown, 100 Unchecked, 1.5s Time] [2022-02-09 04:00:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2022-02-09 04:00:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 7264. [2022-02-09 04:00:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7264 states, 7263 states have (on average 3.0218917802560927) internal successors, (21948), 7263 states have internal predecessors, (21948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7264 states to 7264 states and 21948 transitions. [2022-02-09 04:00:45,258 INFO L78 Accepts]: Start accepts. Automaton has 7264 states and 21948 transitions. Word has length 48 [2022-02-09 04:00:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:45,258 INFO L470 AbstractCegarLoop]: Abstraction has 7264 states and 21948 transitions. [2022-02-09 04:00:45,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7264 states and 21948 transitions. [2022-02-09 04:00:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:45,269 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:45,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:45,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-02-09 04:00:45,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-02-09 04:00:45,469 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 213722971, now seen corresponding path program 55 times [2022-02-09 04:00:45,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:45,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042975835] [2022-02-09 04:00:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:45,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:46,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:46,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042975835] [2022-02-09 04:00:46,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042975835] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:46,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247352982] [2022-02-09 04:00:46,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:00:46,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:46,005 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:46,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-09 04:00:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:46,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:46,230 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 15 treesize of output 7 [2022-02-09 04:00:46,428 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 15 treesize of output 7 [2022-02-09 04:00:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:47,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:47,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:47,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:47,992 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:47,992 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 37 treesize of output 39 [2022-02-09 04:00:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:48,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247352982] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:48,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:48,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-09 04:00:48,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366863127] [2022-02-09 04:00:48,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:48,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:00:48,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:00:48,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:00:48,249 INFO L87 Difference]: Start difference. First operand 7264 states and 21948 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:51,527 INFO L93 Difference]: Finished difference Result 16648 states and 49765 transitions. [2022-02-09 04:00:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 04:00:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:51,557 INFO L225 Difference]: With dead ends: 16648 [2022-02-09 04:00:51,557 INFO L226 Difference]: Without dead ends: 16597 [2022-02-09 04:00:51,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 52 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=619, Invalid=6691, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 04:00:51,557 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 378 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:51,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2418 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 04:00:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16597 states. [2022-02-09 04:00:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16597 to 7252. [2022-02-09 04:00:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 7251 states have (on average 3.02247965797821) internal successors, (21916), 7251 states have internal predecessors, (21916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 21916 transitions. [2022-02-09 04:00:51,730 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 21916 transitions. Word has length 48 [2022-02-09 04:00:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:51,730 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 21916 transitions. [2022-02-09 04:00:51,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 21916 transitions. [2022-02-09 04:00:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:51,739 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:51,739 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:51,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-02-09 04:00:51,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-02-09 04:00:51,940 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 988891109, now seen corresponding path program 56 times [2022-02-09 04:00:51,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:51,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381237074] [2022-02-09 04:00:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:51,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:52,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:52,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381237074] [2022-02-09 04:00:52,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381237074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:52,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135337947] [2022-02-09 04:00:52,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:00:52,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:52,464 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:52,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-09 04:00:52,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:00:52,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:52,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:52,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:52,690 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 15 treesize of output 7 [2022-02-09 04:00:52,882 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 15 treesize of output 7 [2022-02-09 04:00:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:53,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:00:54,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:54,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:00:54,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:00:54,365 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:00:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:54,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135337947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:00:54,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:00:54,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 52 [2022-02-09 04:00:54,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279745548] [2022-02-09 04:00:54,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:00:54,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:00:54,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:00:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:00:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2523, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:00:54,596 INFO L87 Difference]: Start difference. First operand 7252 states and 21916 transitions. Second operand has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:00:58,074 INFO L93 Difference]: Finished difference Result 16628 states and 49663 transitions. [2022-02-09 04:00:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 04:00:58,075 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 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 48 [2022-02-09 04:00:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:00:58,109 INFO L225 Difference]: With dead ends: 16628 [2022-02-09 04:00:58,109 INFO L226 Difference]: Without dead ends: 16546 [2022-02-09 04:00:58,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 04:00:58,110 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 407 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 04:00:58,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 2745 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 4013 Invalid, 0 Unknown, 98 Unchecked, 1.6s Time] [2022-02-09 04:00:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16546 states. [2022-02-09 04:00:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16546 to 7182. [2022-02-09 04:00:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0320289653251637) internal successors, (21773), 7181 states have internal predecessors, (21773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21773 transitions. [2022-02-09 04:00:58,313 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21773 transitions. Word has length 48 [2022-02-09 04:00:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:00:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21773 transitions. [2022-02-09 04:00:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:00:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21773 transitions. [2022-02-09 04:00:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:00:58,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:00:58,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:00:58,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-02-09 04:00:58,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-02-09 04:00:58,523 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:00:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:00:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1985868295, now seen corresponding path program 57 times [2022-02-09 04:00:58,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:00:58,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353943919] [2022-02-09 04:00:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:00:58,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:00:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:00:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:00:59,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:00:59,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353943919] [2022-02-09 04:00:59,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353943919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:00:59,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135726235] [2022-02-09 04:00:59,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:00:59,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:00:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:00:59,055 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:00:59,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-09 04:00:59,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:00:59,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:00:59,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:00:59,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:00:59,280 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 11 treesize of output 7 [2022-02-09 04:00:59,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:00,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:00,891 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:00,891 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 34 treesize of output 36 [2022-02-09 04:01:01,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:01,042 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 42 treesize of output 42 [2022-02-09 04:01:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:01,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135726235] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:01,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:01,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 56 [2022-02-09 04:01:01,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42023182] [2022-02-09 04:01:01,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:01,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-09 04:01:01,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-09 04:01:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2958, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 04:01:01,284 INFO L87 Difference]: Start difference. First operand 7182 states and 21773 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:05,788 INFO L93 Difference]: Finished difference Result 16459 states and 48695 transitions. [2022-02-09 04:01:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-09 04:01:05,789 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:05,823 INFO L225 Difference]: With dead ends: 16459 [2022-02-09 04:01:05,824 INFO L226 Difference]: Without dead ends: 16405 [2022-02-09 04:01:05,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=650, Invalid=8856, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 04:01:05,825 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 315 mSDsluCounter, 3920 mSDsCounter, 0 mSdLazyCounter, 5432 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 5507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:05,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2909 Invalid, 5507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5432 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-09 04:01:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16405 states. [2022-02-09 04:01:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16405 to 7194. [2022-02-09 04:01:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.0310023634088696) internal successors, (21802), 7193 states have internal predecessors, (21802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 21802 transitions. [2022-02-09 04:01:06,029 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 21802 transitions. Word has length 48 [2022-02-09 04:01:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:06,029 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 21802 transitions. [2022-02-09 04:01:06,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 21802 transitions. [2022-02-09 04:01:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:06,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:06,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:06,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-02-09 04:01:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:06,240 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1109685831, now seen corresponding path program 58 times [2022-02-09 04:01:06,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:06,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022944513] [2022-02-09 04:01:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:06,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:06,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022944513] [2022-02-09 04:01:06,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022944513] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:06,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263073783] [2022-02-09 04:01:06,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:01:06,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:06,767 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:06,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-09 04:01:06,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:01:06,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:06,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:06,994 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 15 treesize of output 7 [2022-02-09 04:01:07,195 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 15 treesize of output 7 [2022-02-09 04:01:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:07,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:08,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:08,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:08,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:08,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:08,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263073783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:08,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:08,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:01:08,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352468472] [2022-02-09 04:01:08,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:08,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:01:08,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:01:08,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:01:08,925 INFO L87 Difference]: Start difference. First operand 7194 states and 21802 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:11,530 INFO L93 Difference]: Finished difference Result 12686 states and 38269 transitions. [2022-02-09 04:01:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:01:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:11,554 INFO L225 Difference]: With dead ends: 12686 [2022-02-09 04:01:11,554 INFO L226 Difference]: Without dead ends: 12642 [2022-02-09 04:01:11,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=483, Invalid=5679, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:01:11,555 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 326 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:11,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2119 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 04:01:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2022-02-09 04:01:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 7190. [2022-02-09 04:01:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7190 states, 7189 states have (on average 3.0311587147030186) internal successors, (21791), 7189 states have internal predecessors, (21791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7190 states to 7190 states and 21791 transitions. [2022-02-09 04:01:11,726 INFO L78 Accepts]: Start accepts. Automaton has 7190 states and 21791 transitions. Word has length 48 [2022-02-09 04:01:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:11,727 INFO L470 AbstractCegarLoop]: Abstraction has 7190 states and 21791 transitions. [2022-02-09 04:01:11,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7190 states and 21791 transitions. [2022-02-09 04:01:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:11,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:11,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:11,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-02-09 04:01:11,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:11,938 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1844153155, now seen corresponding path program 59 times [2022-02-09 04:01:11,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:11,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761721451] [2022-02-09 04:01:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:11,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:12,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:12,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761721451] [2022-02-09 04:01:12,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761721451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:12,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980832010] [2022-02-09 04:01:12,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:01:12,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:12,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:12,536 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:12,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-09 04:01:12,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:01:12,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:12,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 04:01:12,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:12,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:12,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:13,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:14,237 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:14,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:14,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:14,368 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 37 treesize of output 39 [2022-02-09 04:01:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:14,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980832010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:14,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:14,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:01:14,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232627970] [2022-02-09 04:01:14,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:14,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:01:14,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:01:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:01:14,629 INFO L87 Difference]: Start difference. First operand 7190 states and 21791 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:17,397 INFO L93 Difference]: Finished difference Result 15470 states and 46197 transitions. [2022-02-09 04:01:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-09 04:01:17,397 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:17,427 INFO L225 Difference]: With dead ends: 15470 [2022-02-09 04:01:17,427 INFO L226 Difference]: Without dead ends: 15413 [2022-02-09 04:01:17,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=475, Invalid=5845, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:01:17,428 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 339 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2918 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:01:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15413 states. [2022-02-09 04:01:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15413 to 7196. [2022-02-09 04:01:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7196 states, 7195 states have (on average 3.030437804030577) internal successors, (21804), 7195 states have internal predecessors, (21804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 21804 transitions. [2022-02-09 04:01:17,624 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 21804 transitions. Word has length 48 [2022-02-09 04:01:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 7196 states and 21804 transitions. [2022-02-09 04:01:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 21804 transitions. [2022-02-09 04:01:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:17,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:17,635 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:17,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-02-09 04:01:17,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:17,836 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1167666681, now seen corresponding path program 60 times [2022-02-09 04:01:17,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:17,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257302788] [2022-02-09 04:01:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:17,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:18,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:18,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257302788] [2022-02-09 04:01:18,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257302788] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:18,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105068015] [2022-02-09 04:01:18,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:01:18,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:18,373 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:18,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-09 04:01:18,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:01:18,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:18,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 04:01:18,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:18,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:18,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:19,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:20,355 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:20,356 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-09 04:01:20,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:20,566 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 73 treesize of output 63 [2022-02-09 04:01:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:20,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105068015] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:20,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:20,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 60 [2022-02-09 04:01:20,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531450979] [2022-02-09 04:01:20,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:20,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-09 04:01:20,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-09 04:01:20,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=3389, Unknown=0, NotChecked=0, Total=3660 [2022-02-09 04:01:20,832 INFO L87 Difference]: Start difference. First operand 7196 states and 21804 transitions. Second operand has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:23,817 INFO L93 Difference]: Finished difference Result 15421 states and 46118 transitions. [2022-02-09 04:01:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-09 04:01:23,817 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:23,844 INFO L225 Difference]: With dead ends: 15421 [2022-02-09 04:01:23,844 INFO L226 Difference]: Without dead ends: 15305 [2022-02-09 04:01:23,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=588, Invalid=7602, Unknown=0, NotChecked=0, Total=8190 [2022-02-09 04:01:23,845 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 442 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:23,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2634 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:01:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15305 states. [2022-02-09 04:01:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15305 to 7176. [2022-02-09 04:01:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7175 states have (on average 3.032891986062718) internal successors, (21761), 7175 states have internal predecessors, (21761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 21761 transitions. [2022-02-09 04:01:24,006 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 21761 transitions. Word has length 48 [2022-02-09 04:01:24,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:24,006 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 21761 transitions. [2022-02-09 04:01:24,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 21761 transitions. [2022-02-09 04:01:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:24,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:24,015 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:24,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-02-09 04:01:24,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:24,215 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1438624929, now seen corresponding path program 61 times [2022-02-09 04:01:24,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:24,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634153504] [2022-02-09 04:01:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:24,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634153504] [2022-02-09 04:01:24,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634153504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968806087] [2022-02-09 04:01:24,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:01:24,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:24,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:24,743 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:24,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-09 04:01:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:24,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:24,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:24,970 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 15 treesize of output 7 [2022-02-09 04:01:25,167 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 15 treesize of output 7 [2022-02-09 04:01:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:25,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:26,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:26,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:26,631 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:26,631 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:26,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968806087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:26,864 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:26,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:01:26,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725372058] [2022-02-09 04:01:26,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:26,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:01:26,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:26,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:01:26,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:01:26,865 INFO L87 Difference]: Start difference. First operand 7176 states and 21761 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:29,735 INFO L93 Difference]: Finished difference Result 12727 states and 38354 transitions. [2022-02-09 04:01:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 04:01:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:29,761 INFO L225 Difference]: With dead ends: 12727 [2022-02-09 04:01:29,762 INFO L226 Difference]: Without dead ends: 12687 [2022-02-09 04:01:29,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=489, Invalid=5831, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:01:29,762 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 365 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:29,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2339 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:01:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12687 states. [2022-02-09 04:01:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12687 to 7194. [2022-02-09 04:01:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.031558459613513) internal successors, (21806), 7193 states have internal predecessors, (21806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 21806 transitions. [2022-02-09 04:01:29,920 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 21806 transitions. Word has length 48 [2022-02-09 04:01:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:29,920 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 21806 transitions. [2022-02-09 04:01:29,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 21806 transitions. [2022-02-09 04:01:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:29,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:29,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:29,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-02-09 04:01:30,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:30,130 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1667383773, now seen corresponding path program 62 times [2022-02-09 04:01:30,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:30,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326582987] [2022-02-09 04:01:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:30,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:30,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:30,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326582987] [2022-02-09 04:01:30,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326582987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:30,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363360738] [2022-02-09 04:01:30,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:01:30,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:30,658 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:30,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-09 04:01:30,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:01:30,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:30,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:30,882 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 15 treesize of output 7 [2022-02-09 04:01:31,078 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 15 treesize of output 7 [2022-02-09 04:01:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:31,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:32,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:32,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:32,549 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:32,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:32,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363360738] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:32,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:32,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:01:32,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799525488] [2022-02-09 04:01:32,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:01:32,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:01:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:01:32,784 INFO L87 Difference]: Start difference. First operand 7194 states and 21806 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:35,711 INFO L93 Difference]: Finished difference Result 15342 states and 45924 transitions. [2022-02-09 04:01:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:01:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:35,742 INFO L225 Difference]: With dead ends: 15342 [2022-02-09 04:01:35,742 INFO L226 Difference]: Without dead ends: 15297 [2022-02-09 04:01:35,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=447, Invalid=5559, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 04:01:35,742 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 260 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:35,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 3064 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-09 04:01:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2022-02-09 04:01:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 7188. [2022-02-09 04:01:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.031445665785446) internal successors, (21787), 7187 states have internal predecessors, (21787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 21787 transitions. [2022-02-09 04:01:35,930 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 21787 transitions. Word has length 48 [2022-02-09 04:01:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:35,930 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 21787 transitions. [2022-02-09 04:01:35,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 21787 transitions. [2022-02-09 04:01:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:35,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:35,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:35,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-02-09 04:01:36,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:36,140 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1680851723, now seen corresponding path program 63 times [2022-02-09 04:01:36,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:36,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890905405] [2022-02-09 04:01:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:36,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:36,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:36,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890905405] [2022-02-09 04:01:36,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890905405] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:36,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526726496] [2022-02-09 04:01:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:01:36,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:36,698 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:36,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-09 04:01:36,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:01:36,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:36,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:36,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:36,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:37,140 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 11 treesize of output 7 [2022-02-09 04:01:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:38,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:38,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:38,521 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:38,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:38,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526726496] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:38,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:38,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:01:38,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617011903] [2022-02-09 04:01:38,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:01:38,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:01:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:01:38,769 INFO L87 Difference]: Start difference. First operand 7188 states and 21787 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:40,507 INFO L93 Difference]: Finished difference Result 12412 states and 37319 transitions. [2022-02-09 04:01:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-09 04:01:40,507 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:40,529 INFO L225 Difference]: With dead ends: 12412 [2022-02-09 04:01:40,529 INFO L226 Difference]: Without dead ends: 12404 [2022-02-09 04:01:40,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=3839, Unknown=0, NotChecked=0, Total=4160 [2022-02-09 04:01:40,530 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 344 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:40,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2457 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2677 Invalid, 0 Unknown, 111 Unchecked, 1.0s Time] [2022-02-09 04:01:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12404 states. [2022-02-09 04:01:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12404 to 7208. [2022-02-09 04:01:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 7207 states have (on average 3.029554599694741) internal successors, (21834), 7207 states have internal predecessors, (21834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 21834 transitions. [2022-02-09 04:01:40,672 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 21834 transitions. Word has length 48 [2022-02-09 04:01:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:40,672 INFO L470 AbstractCegarLoop]: Abstraction has 7208 states and 21834 transitions. [2022-02-09 04:01:40,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 21834 transitions. [2022-02-09 04:01:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:40,682 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:40,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:40,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-02-09 04:01:40,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:40,883 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1310847503, now seen corresponding path program 64 times [2022-02-09 04:01:40,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:40,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258809022] [2022-02-09 04:01:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:40,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:41,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:41,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258809022] [2022-02-09 04:01:41,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258809022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:41,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071503409] [2022-02-09 04:01:41,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:01:41,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:41,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:41,420 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:41,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-09 04:01:41,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:01:41,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:41,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:41,646 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 15 treesize of output 7 [2022-02-09 04:01:41,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-09 04:01:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:42,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:43,190 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:43,190 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 34 treesize of output 36 [2022-02-09 04:01:43,324 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:43,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:43,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071503409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:43,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:43,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:01:43,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676877995] [2022-02-09 04:01:43,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:43,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:01:43,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:01:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:01:43,547 INFO L87 Difference]: Start difference. First operand 7208 states and 21834 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:46,383 INFO L93 Difference]: Finished difference Result 15556 states and 46360 transitions. [2022-02-09 04:01:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 04:01:46,384 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:46,418 INFO L225 Difference]: With dead ends: 15556 [2022-02-09 04:01:46,418 INFO L226 Difference]: Without dead ends: 15497 [2022-02-09 04:01:46,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=509, Invalid=6297, Unknown=0, NotChecked=0, Total=6806 [2022-02-09 04:01:46,419 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 364 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:46,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2855 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3498 Invalid, 0 Unknown, 368 Unchecked, 1.4s Time] [2022-02-09 04:01:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2022-02-09 04:01:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 7226. [2022-02-09 04:01:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7226 states, 7225 states have (on average 3.027681660899654) internal successors, (21875), 7225 states have internal predecessors, (21875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7226 states to 7226 states and 21875 transitions. [2022-02-09 04:01:46,600 INFO L78 Accepts]: Start accepts. Automaton has 7226 states and 21875 transitions. Word has length 48 [2022-02-09 04:01:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:46,600 INFO L470 AbstractCegarLoop]: Abstraction has 7226 states and 21875 transitions. [2022-02-09 04:01:46,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7226 states and 21875 transitions. [2022-02-09 04:01:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:46,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:46,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:46,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-02-09 04:01:46,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-02-09 04:01:46,811 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1526414205, now seen corresponding path program 65 times [2022-02-09 04:01:46,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:46,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144345236] [2022-02-09 04:01:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:46,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:47,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:47,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144345236] [2022-02-09 04:01:47,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144345236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:47,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939029569] [2022-02-09 04:01:47,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:01:47,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:47,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:47,339 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:47,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-09 04:01:47,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:01:47,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:47,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:47,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:47,558 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 15 treesize of output 7 [2022-02-09 04:01:47,753 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 15 treesize of output 7 [2022-02-09 04:01:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:48,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:49,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:49,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:49,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:49,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:49,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939029569] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:49,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:49,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:01:49,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166115458] [2022-02-09 04:01:49,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:49,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:01:49,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:01:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2645, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:01:49,418 INFO L87 Difference]: Start difference. First operand 7226 states and 21875 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:52,172 INFO L93 Difference]: Finished difference Result 15514 states and 46303 transitions. [2022-02-09 04:01:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-09 04:01:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:52,201 INFO L225 Difference]: With dead ends: 15514 [2022-02-09 04:01:52,201 INFO L226 Difference]: Without dead ends: 15341 [2022-02-09 04:01:52,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=479, Invalid=5841, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:01:52,202 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 368 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 360 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:52,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 3053 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3793 Invalid, 0 Unknown, 360 Unchecked, 1.4s Time] [2022-02-09 04:01:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15341 states. [2022-02-09 04:01:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15341 to 7204. [2022-02-09 04:01:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 7203 states have (on average 3.0284603637373317) internal successors, (21814), 7203 states have internal predecessors, (21814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 21814 transitions. [2022-02-09 04:01:52,378 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 21814 transitions. Word has length 48 [2022-02-09 04:01:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:52,378 INFO L470 AbstractCegarLoop]: Abstraction has 7204 states and 21814 transitions. [2022-02-09 04:01:52,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 21814 transitions. [2022-02-09 04:01:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:52,388 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:52,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:52,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-02-09 04:01:52,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-09 04:01:52,589 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash 442393127, now seen corresponding path program 66 times [2022-02-09 04:01:52,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:52,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934605382] [2022-02-09 04:01:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:52,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:53,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:53,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934605382] [2022-02-09 04:01:53,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934605382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:53,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778603206] [2022-02-09 04:01:53,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:01:53,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:53,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:53,121 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:53,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-09 04:01:53,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:01:53,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:01:53,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:53,345 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 11 treesize of output 7 [2022-02-09 04:01:53,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:01:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:54,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:01:54,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:54,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:01:55,020 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:01:55,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:01:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:55,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778603206] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:01:55,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:01:55,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:01:55,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600979940] [2022-02-09 04:01:55,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:01:55,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:01:55,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:01:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:01:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:01:55,251 INFO L87 Difference]: Start difference. First operand 7204 states and 21814 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:01:58,049 INFO L93 Difference]: Finished difference Result 15438 states and 46105 transitions. [2022-02-09 04:01:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-09 04:01:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:01:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:01:58,083 INFO L225 Difference]: With dead ends: 15438 [2022-02-09 04:01:58,083 INFO L226 Difference]: Without dead ends: 15297 [2022-02-09 04:01:58,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=475, Invalid=5845, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:01:58,084 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 343 mSDsluCounter, 3864 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:01:58,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2972 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:01:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2022-02-09 04:01:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 7128. [2022-02-09 04:01:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 3.0350778728777885) internal successors, (21631), 7127 states have internal predecessors, (21631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 21631 transitions. [2022-02-09 04:01:58,285 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 21631 transitions. Word has length 48 [2022-02-09 04:01:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:01:58,285 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 21631 transitions. [2022-02-09 04:01:58,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:01:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 21631 transitions. [2022-02-09 04:01:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:01:58,295 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:01:58,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:01:58,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-02-09 04:01:58,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:58,496 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:01:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:01:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash -873155629, now seen corresponding path program 67 times [2022-02-09 04:01:58,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:01:58,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630346202] [2022-02-09 04:01:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:01:58,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:01:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:01:59,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:01:59,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630346202] [2022-02-09 04:01:59,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630346202] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:01:59,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525700105] [2022-02-09 04:01:59,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:01:59,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:01:59,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:01:59,022 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:01:59,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-09 04:01:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:01:59,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:01:59,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:01:59,248 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 15 treesize of output 7 [2022-02-09 04:01:59,467 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 15 treesize of output 7 [2022-02-09 04:02:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:00,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:00,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:00,775 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 34 treesize of output 36 [2022-02-09 04:02:00,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:00,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:01,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525700105] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:01,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:01,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:01,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937875092] [2022-02-09 04:02:01,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:01,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:01,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:01,141 INFO L87 Difference]: Start difference. First operand 7128 states and 21631 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:03,585 INFO L93 Difference]: Finished difference Result 12635 states and 38136 transitions. [2022-02-09 04:02:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:03,585 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:03,609 INFO L225 Difference]: With dead ends: 12635 [2022-02-09 04:02:03,609 INFO L226 Difference]: Without dead ends: 12600 [2022-02-09 04:02:03,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=464, Invalid=5388, Unknown=0, NotChecked=0, Total=5852 [2022-02-09 04:02:03,610 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 325 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:03,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2154 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-09 04:02:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2022-02-09 04:02:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 7136. [2022-02-09 04:02:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.0343377715487034) internal successors, (21650), 7135 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21650 transitions. [2022-02-09 04:02:03,751 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21650 transitions. Word has length 48 [2022-02-09 04:02:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:03,751 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21650 transitions. [2022-02-09 04:02:03,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21650 transitions. [2022-02-09 04:02:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:03,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:03,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:03,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-02-09 04:02:03,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-02-09 04:02:03,961 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 3026835, now seen corresponding path program 68 times [2022-02-09 04:02:03,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:03,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76238950] [2022-02-09 04:02:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:03,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:04,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:04,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76238950] [2022-02-09 04:02:04,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76238950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:04,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374249455] [2022-02-09 04:02:04,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:02:04,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:04,492 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-09 04:02:04,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:02:04,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:04,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:04,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:04,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:05,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:06,227 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:06,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:06,352 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:06,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:06,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374249455] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:06,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:06,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:06,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262213582] [2022-02-09 04:02:06,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:06,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:06,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:06,587 INFO L87 Difference]: Start difference. First operand 7136 states and 21650 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:09,254 INFO L93 Difference]: Finished difference Result 12666 states and 38195 transitions. [2022-02-09 04:02:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:09,281 INFO L225 Difference]: With dead ends: 12666 [2022-02-09 04:02:09,281 INFO L226 Difference]: Without dead ends: 12622 [2022-02-09 04:02:09,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=477, Invalid=5223, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 04:02:09,282 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 347 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:09,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2563 Invalid, 3626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3443 Invalid, 0 Unknown, 82 Unchecked, 1.3s Time] [2022-02-09 04:02:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12622 states. [2022-02-09 04:02:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12622 to 7132. [2022-02-09 04:02:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0349179638199413) internal successors, (21642), 7131 states have internal predecessors, (21642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21642 transitions. [2022-02-09 04:02:09,435 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21642 transitions. Word has length 48 [2022-02-09 04:02:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:09,435 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21642 transitions. [2022-02-09 04:02:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21642 transitions. [2022-02-09 04:02:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:09,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:09,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:09,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-02-09 04:02:09,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-02-09 04:02:09,646 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2100109293, now seen corresponding path program 69 times [2022-02-09 04:02:09,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:09,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077383392] [2022-02-09 04:02:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:09,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:10,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:10,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077383392] [2022-02-09 04:02:10,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077383392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:10,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122813442] [2022-02-09 04:02:10,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:02:10,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:10,161 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:10,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-09 04:02:10,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:02:10,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:10,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:10,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:10,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:10,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:11,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:11,784 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:11,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:11,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:11,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:12,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122813442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:12,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:12,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:12,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171878028] [2022-02-09 04:02:12,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:12,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:12,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:12,164 INFO L87 Difference]: Start difference. First operand 7132 states and 21642 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:14,742 INFO L93 Difference]: Finished difference Result 15280 states and 45762 transitions. [2022-02-09 04:02:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:14,742 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:14,769 INFO L225 Difference]: With dead ends: 15280 [2022-02-09 04:02:14,769 INFO L226 Difference]: Without dead ends: 15245 [2022-02-09 04:02:14,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=432, Invalid=5268, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 04:02:14,769 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 241 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 3887 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:14,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2825 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3887 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:02:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-02-09 04:02:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 7136. [2022-02-09 04:02:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.0343377715487034) internal successors, (21650), 7135 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21650 transitions. [2022-02-09 04:02:14,943 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21650 transitions. Word has length 48 [2022-02-09 04:02:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:14,943 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21650 transitions. [2022-02-09 04:02:14,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21650 transitions. [2022-02-09 04:02:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:14,953 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:14,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:14,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-02-09 04:02:15,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-02-09 04:02:15,154 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:15,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash 361940599, now seen corresponding path program 70 times [2022-02-09 04:02:15,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:15,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518818491] [2022-02-09 04:02:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:15,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:15,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:15,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518818491] [2022-02-09 04:02:15,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518818491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:15,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246380182] [2022-02-09 04:02:15,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:02:15,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:15,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:15,686 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:15,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-09 04:02:15,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:02:15,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:15,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:15,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:15,909 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 15 treesize of output 7 [2022-02-09 04:02:16,108 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 15 treesize of output 7 [2022-02-09 04:02:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:16,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:17,487 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:17,487 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:17,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:17,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:17,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246380182] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:17,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:17,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:17,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598529477] [2022-02-09 04:02:17,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:17,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:17,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:17,851 INFO L87 Difference]: Start difference. First operand 7136 states and 21650 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:20,433 INFO L93 Difference]: Finished difference Result 15284 states and 45768 transitions. [2022-02-09 04:02:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:20,462 INFO L225 Difference]: With dead ends: 15284 [2022-02-09 04:02:20,462 INFO L226 Difference]: Without dead ends: 15241 [2022-02-09 04:02:20,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 52 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=432, Invalid=5268, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 04:02:20,463 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 258 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:20,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2651 Invalid, 3848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3785 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:02:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15241 states. [2022-02-09 04:02:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15241 to 7132. [2022-02-09 04:02:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0346374982470903) internal successors, (21640), 7131 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21640 transitions. [2022-02-09 04:02:20,619 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21640 transitions. Word has length 48 [2022-02-09 04:02:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21640 transitions. [2022-02-09 04:02:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21640 transitions. [2022-02-09 04:02:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:20,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:20,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:20,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-02-09 04:02:20,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:20,829 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -494007049, now seen corresponding path program 71 times [2022-02-09 04:02:20,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:20,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722916935] [2022-02-09 04:02:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:20,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:21,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:21,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722916935] [2022-02-09 04:02:21,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722916935] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:21,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785865757] [2022-02-09 04:02:21,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:02:21,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:21,367 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:21,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-09 04:02:21,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:02:21,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:21,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:21,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:21,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:22,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:23,110 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:23,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:23,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:23,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:23,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785865757] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:23,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:23,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:23,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775363417] [2022-02-09 04:02:23,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:23,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:23,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:23,460 INFO L87 Difference]: Start difference. First operand 7132 states and 21640 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:25,955 INFO L93 Difference]: Finished difference Result 12668 states and 38199 transitions. [2022-02-09 04:02:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:25,955 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:25,977 INFO L225 Difference]: With dead ends: 12668 [2022-02-09 04:02:25,977 INFO L226 Difference]: Without dead ends: 12628 [2022-02-09 04:02:25,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=477, Invalid=5223, Unknown=0, NotChecked=0, Total=5700 [2022-02-09 04:02:25,977 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 357 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:25,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2239 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2958 Invalid, 0 Unknown, 102 Unchecked, 1.1s Time] [2022-02-09 04:02:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2022-02-09 04:02:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 7138. [2022-02-09 04:02:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 7137 states have (on average 3.0339078043996075) internal successors, (21653), 7137 states have internal predecessors, (21653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 21653 transitions. [2022-02-09 04:02:26,111 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 21653 transitions. Word has length 48 [2022-02-09 04:02:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:26,112 INFO L470 AbstractCegarLoop]: Abstraction has 7138 states and 21653 transitions. [2022-02-09 04:02:26,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 21653 transitions. [2022-02-09 04:02:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:26,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:26,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:26,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-02-09 04:02:26,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:26,321 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2134561661, now seen corresponding path program 72 times [2022-02-09 04:02:26,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:26,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106306508] [2022-02-09 04:02:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:26,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:26,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:26,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106306508] [2022-02-09 04:02:26,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106306508] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:26,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539667218] [2022-02-09 04:02:26,841 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:02:26,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:26,842 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:26,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-09 04:02:26,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:02:26,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:27,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:27,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:27,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:28,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:28,613 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 34 treesize of output 36 [2022-02-09 04:02:28,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:28,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:28,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539667218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:28,970 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:28,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:02:28,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371693466] [2022-02-09 04:02:28,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:28,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:02:28,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:02:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:02:28,970 INFO L87 Difference]: Start difference. First operand 7138 states and 21653 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:31,528 INFO L93 Difference]: Finished difference Result 12629 states and 38115 transitions. [2022-02-09 04:02:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:31,578 INFO L225 Difference]: With dead ends: 12629 [2022-02-09 04:02:31,578 INFO L226 Difference]: Without dead ends: 12582 [2022-02-09 04:02:31,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=464, Invalid=5388, Unknown=0, NotChecked=0, Total=5852 [2022-02-09 04:02:31,578 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 324 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:31,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2246 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 04:02:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2022-02-09 04:02:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 7130. [2022-02-09 04:02:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.034787487726189) internal successors, (21635), 7129 states have internal predecessors, (21635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21635 transitions. [2022-02-09 04:02:31,697 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21635 transitions. Word has length 48 [2022-02-09 04:02:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:31,698 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21635 transitions. [2022-02-09 04:02:31,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21635 transitions. [2022-02-09 04:02:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:31,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:31,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:31,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-02-09 04:02:31,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:31,907 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:31,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1248400551, now seen corresponding path program 73 times [2022-02-09 04:02:31,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:31,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966209678] [2022-02-09 04:02:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:31,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:32,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:32,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966209678] [2022-02-09 04:02:32,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966209678] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:32,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710464136] [2022-02-09 04:02:32,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:02:32,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:32,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:32,427 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:32,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-09 04:02:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:32,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:32,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:32,648 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 15 treesize of output 7 [2022-02-09 04:02:32,841 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 15 treesize of output 7 [2022-02-09 04:02:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:33,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:34,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:34,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:34,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:34,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:34,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710464136] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:34,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:34,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:02:34,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552643202] [2022-02-09 04:02:34,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:34,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:02:34,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:02:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:02:34,468 INFO L87 Difference]: Start difference. First operand 7130 states and 21635 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:36,898 INFO L93 Difference]: Finished difference Result 15337 states and 45881 transitions. [2022-02-09 04:02:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:02:36,899 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:36,929 INFO L225 Difference]: With dead ends: 15337 [2022-02-09 04:02:36,929 INFO L226 Difference]: Without dead ends: 15302 [2022-02-09 04:02:36,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=461, Invalid=5701, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:02:36,930 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 306 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:36,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2439 Invalid, 3233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 04:02:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15302 states. [2022-02-09 04:02:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15302 to 7138. [2022-02-09 04:02:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 7137 states have (on average 3.0339078043996075) internal successors, (21653), 7137 states have internal predecessors, (21653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 21653 transitions. [2022-02-09 04:02:37,114 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 21653 transitions. Word has length 48 [2022-02-09 04:02:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:37,114 INFO L470 AbstractCegarLoop]: Abstraction has 7138 states and 21653 transitions. [2022-02-09 04:02:37,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 21653 transitions. [2022-02-09 04:02:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:37,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:37,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:37,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-02-09 04:02:37,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:37,324 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2124583015, now seen corresponding path program 74 times [2022-02-09 04:02:37,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:37,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53053852] [2022-02-09 04:02:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:37,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:37,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:37,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53053852] [2022-02-09 04:02:37,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53053852] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:37,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216649206] [2022-02-09 04:02:37,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:02:37,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:37,850 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:37,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-09 04:02:37,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:02:37,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:37,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:37,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:38,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:38,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:38,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:39,679 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:39,680 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:39,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:39,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:40,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216649206] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:40,032 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:40,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:02:40,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935431848] [2022-02-09 04:02:40,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:40,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:02:40,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:02:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:02:40,033 INFO L87 Difference]: Start difference. First operand 7138 states and 21653 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:43,206 INFO L93 Difference]: Finished difference Result 21362 states and 63936 transitions. [2022-02-09 04:02:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-09 04:02:43,208 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:43,250 INFO L225 Difference]: With dead ends: 21362 [2022-02-09 04:02:43,250 INFO L226 Difference]: Without dead ends: 21288 [2022-02-09 04:02:43,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 56 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=589, Invalid=6721, Unknown=0, NotChecked=0, Total=7310 [2022-02-09 04:02:43,251 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 416 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:43,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2399 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3118 Invalid, 0 Unknown, 86 Unchecked, 1.2s Time] [2022-02-09 04:02:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21288 states. [2022-02-09 04:02:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21288 to 7130. [2022-02-09 04:02:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.0346472155982607) internal successors, (21634), 7129 states have internal predecessors, (21634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21634 transitions. [2022-02-09 04:02:43,471 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21634 transitions. Word has length 48 [2022-02-09 04:02:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:43,471 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21634 transitions. [2022-02-09 04:02:43,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21634 transitions. [2022-02-09 04:02:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:43,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:43,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:43,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-02-09 04:02:43,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:43,681 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -896412165, now seen corresponding path program 75 times [2022-02-09 04:02:43,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:43,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627229504] [2022-02-09 04:02:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:43,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:44,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:44,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627229504] [2022-02-09 04:02:44,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627229504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:44,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138917565] [2022-02-09 04:02:44,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:02:44,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:44,212 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:44,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-09 04:02:44,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:02:44,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:44,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:44,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:44,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:02:44,649 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 11 treesize of output 7 [2022-02-09 04:02:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:45,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:45,942 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:45,943 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:46,071 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:46,071 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 37 treesize of output 39 [2022-02-09 04:02:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:46,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138917565] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:46,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:46,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:02:46,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420385518] [2022-02-09 04:02:46,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:02:46,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:02:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:02:46,302 INFO L87 Difference]: Start difference. First operand 7130 states and 21634 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:48,952 INFO L93 Difference]: Finished difference Result 12728 states and 38323 transitions. [2022-02-09 04:02:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 04:02:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:48,976 INFO L225 Difference]: With dead ends: 12728 [2022-02-09 04:02:48,976 INFO L226 Difference]: Without dead ends: 12635 [2022-02-09 04:02:48,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=522, Invalid=6120, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 04:02:48,977 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 416 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:48,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2235 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2817 Invalid, 0 Unknown, 185 Unchecked, 1.1s Time] [2022-02-09 04:02:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2022-02-09 04:02:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 7142. [2022-02-09 04:02:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 7141 states have (on average 3.0331886290435515) internal successors, (21660), 7141 states have internal predecessors, (21660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 21660 transitions. [2022-02-09 04:02:49,110 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 21660 transitions. Word has length 48 [2022-02-09 04:02:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:49,110 INFO L470 AbstractCegarLoop]: Abstraction has 7142 states and 21660 transitions. [2022-02-09 04:02:49,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 21660 transitions. [2022-02-09 04:02:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:49,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:49,119 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:49,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-02-09 04:02:49,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:49,320 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1732156545, now seen corresponding path program 76 times [2022-02-09 04:02:49,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:49,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547845419] [2022-02-09 04:02:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:49,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:49,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:49,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547845419] [2022-02-09 04:02:49,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547845419] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:49,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911167311] [2022-02-09 04:02:49,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:02:49,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:49,847 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-09 04:02:49,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:02:49,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:49,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:49,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:50,074 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 15 treesize of output 7 [2022-02-09 04:02:50,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-09 04:02:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:50,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:51,620 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:51,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:51,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:51,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:51,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911167311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:51,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:51,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:02:51,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346421692] [2022-02-09 04:02:51,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:02:51,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:02:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:02:51,971 INFO L87 Difference]: Start difference. First operand 7142 states and 21660 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:02:54,383 INFO L93 Difference]: Finished difference Result 15290 states and 45778 transitions. [2022-02-09 04:02:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:02:54,383 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:02:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:02:54,411 INFO L225 Difference]: With dead ends: 15290 [2022-02-09 04:02:54,412 INFO L226 Difference]: Without dead ends: 15237 [2022-02-09 04:02:54,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=453, Invalid=5553, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 04:02:54,412 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 310 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:02:54,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2296 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 04:02:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15237 states. [2022-02-09 04:02:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15237 to 7128. [2022-02-09 04:02:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 3.0347972498947664) internal successors, (21629), 7127 states have internal predecessors, (21629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 21629 transitions. [2022-02-09 04:02:54,573 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 21629 transitions. Word has length 48 [2022-02-09 04:02:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:02:54,573 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 21629 transitions. [2022-02-09 04:02:54,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:02:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 21629 transitions. [2022-02-09 04:02:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:02:54,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:02:54,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:02:54,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-02-09 04:02:54,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-02-09 04:02:54,783 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:02:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:02:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash 310275829, now seen corresponding path program 77 times [2022-02-09 04:02:54,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:02:54,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355506265] [2022-02-09 04:02:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:02:54,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:02:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:02:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:55,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:02:55,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355506265] [2022-02-09 04:02:55,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355506265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:02:55,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733153384] [2022-02-09 04:02:55,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:02:55,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:02:55,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:02:55,342 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:02:55,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-09 04:02:55,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:02:55,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:02:55,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:02:55,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:02:55,572 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 15 treesize of output 7 [2022-02-09 04:02:55,788 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 15 treesize of output 7 [2022-02-09 04:02:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:56,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:02:57,120 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:57,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:02:57,258 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:02:57,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:02:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:02:57,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733153384] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:02:57,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:02:57,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:02:57,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194851927] [2022-02-09 04:02:57,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:02:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:02:57,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:02:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:02:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:02:57,487 INFO L87 Difference]: Start difference. First operand 7128 states and 21629 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:00,131 INFO L93 Difference]: Finished difference Result 15318 states and 45833 transitions. [2022-02-09 04:03:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:03:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:00,161 INFO L225 Difference]: With dead ends: 15318 [2022-02-09 04:03:00,161 INFO L226 Difference]: Without dead ends: 15283 [2022-02-09 04:03:00,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1803 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=461, Invalid=5701, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:03:00,162 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 290 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 3489 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:00,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2733 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3489 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:03:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15283 states. [2022-02-09 04:03:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15283 to 7132. [2022-02-09 04:03:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0340765671013883) internal successors, (21636), 7131 states have internal predecessors, (21636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21636 transitions. [2022-02-09 04:03:00,330 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21636 transitions. Word has length 48 [2022-02-09 04:03:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:00,330 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21636 transitions. [2022-02-09 04:03:00,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21636 transitions. [2022-02-09 04:03:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:00,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:00,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:00,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-02-09 04:03:00,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-09 04:03:00,540 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1186458293, now seen corresponding path program 78 times [2022-02-09 04:03:00,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:00,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826076529] [2022-02-09 04:03:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:00,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:01,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:01,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826076529] [2022-02-09 04:03:01,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826076529] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:01,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583450443] [2022-02-09 04:03:01,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:03:01,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:01,080 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:01,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-09 04:03:01,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:03:01,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:01,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:01,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:01,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:01,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:02,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:02,866 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:02,866 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:02,997 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:02,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:03,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583450443] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:03,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:03,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:03:03,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718973780] [2022-02-09 04:03:03,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:03,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:03:03,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:03:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:03:03,228 INFO L87 Difference]: Start difference. First operand 7132 states and 21636 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:05,932 INFO L93 Difference]: Finished difference Result 12624 states and 38103 transitions. [2022-02-09 04:03:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:03:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:05,955 INFO L225 Difference]: With dead ends: 12624 [2022-02-09 04:03:05,955 INFO L226 Difference]: Without dead ends: 12572 [2022-02-09 04:03:05,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=489, Invalid=5673, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:03:05,956 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 373 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:05,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2589 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 04:03:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12572 states. [2022-02-09 04:03:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12572 to 7120. [2022-02-09 04:03:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.0361005759235846) internal successors, (21614), 7119 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21614 transitions. [2022-02-09 04:03:06,106 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21614 transitions. Word has length 48 [2022-02-09 04:03:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:06,106 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21614 transitions. [2022-02-09 04:03:06,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21614 transitions. [2022-02-09 04:03:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:06,116 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:06,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:06,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-02-09 04:03:06,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-09 04:03:06,317 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1314885943, now seen corresponding path program 79 times [2022-02-09 04:03:06,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:06,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677040244] [2022-02-09 04:03:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:06,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:06,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:06,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677040244] [2022-02-09 04:03:06,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677040244] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:06,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887976791] [2022-02-09 04:03:06,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:03:06,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:06,844 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:06,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-09 04:03:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:06,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:06,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:07,067 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 15 treesize of output 7 [2022-02-09 04:03:07,278 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 15 treesize of output 7 [2022-02-09 04:03:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:07,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:08,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:08,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:08,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:08,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:08,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887976791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:08,976 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:08,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:03:08,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428204305] [2022-02-09 04:03:08,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:08,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:03:08,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:03:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:03:08,977 INFO L87 Difference]: Start difference. First operand 7120 states and 21614 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:11,756 INFO L93 Difference]: Finished difference Result 12659 states and 38175 transitions. [2022-02-09 04:03:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:03:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:11,779 INFO L225 Difference]: With dead ends: 12659 [2022-02-09 04:03:11,780 INFO L226 Difference]: Without dead ends: 12619 [2022-02-09 04:03:11,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=503, Invalid=5817, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:03:11,780 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 400 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:11,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2619 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3441 Invalid, 0 Unknown, 85 Unchecked, 1.3s Time] [2022-02-09 04:03:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12619 states. [2022-02-09 04:03:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12619 to 7126. [2022-02-09 04:03:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0353684210526315) internal successors, (21627), 7125 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21627 transitions. [2022-02-09 04:03:11,928 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21627 transitions. Word has length 48 [2022-02-09 04:03:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:11,928 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21627 transitions. [2022-02-09 04:03:11,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21627 transitions. [2022-02-09 04:03:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:11,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:11,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:11,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-02-09 04:03:12,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-02-09 04:03:12,137 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash -351512643, now seen corresponding path program 80 times [2022-02-09 04:03:12,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:12,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537630375] [2022-02-09 04:03:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:12,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:12,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:12,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537630375] [2022-02-09 04:03:12,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537630375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:12,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131081713] [2022-02-09 04:03:12,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:03:12,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:12,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:12,667 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:12,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-09 04:03:12,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:03:12,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:12,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:12,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:12,892 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 15 treesize of output 7 [2022-02-09 04:03:13,110 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 15 treesize of output 7 [2022-02-09 04:03:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:13,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:14,317 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:14,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:14,443 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:14,444 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 37 treesize of output 39 [2022-02-09 04:03:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:14,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131081713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:14,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:14,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-09 04:03:14,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187506737] [2022-02-09 04:03:14,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:14,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-09 04:03:14,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-09 04:03:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-09 04:03:14,682 INFO L87 Difference]: Start difference. First operand 7126 states and 21627 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:17,136 INFO L93 Difference]: Finished difference Result 15274 states and 45745 transitions. [2022-02-09 04:03:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:03:17,136 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:17,170 INFO L225 Difference]: With dead ends: 15274 [2022-02-09 04:03:17,170 INFO L226 Difference]: Without dead ends: 15186 [2022-02-09 04:03:17,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=453, Invalid=5553, Unknown=0, NotChecked=0, Total=6006 [2022-02-09 04:03:17,170 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 300 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:17,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2398 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-09 04:03:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15186 states. [2022-02-09 04:03:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15186 to 7077. [2022-02-09 04:03:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7077 states, 7076 states have (on average 3.0416902204635385) internal successors, (21523), 7076 states have internal predecessors, (21523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7077 states to 7077 states and 21523 transitions. [2022-02-09 04:03:17,351 INFO L78 Accepts]: Start accepts. Automaton has 7077 states and 21523 transitions. Word has length 48 [2022-02-09 04:03:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:17,351 INFO L470 AbstractCegarLoop]: Abstraction has 7077 states and 21523 transitions. [2022-02-09 04:03:17,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7077 states and 21523 transitions. [2022-02-09 04:03:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:17,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:17,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:17,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-02-09 04:03:17,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:17,561 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1942194647, now seen corresponding path program 81 times [2022-02-09 04:03:17,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:17,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643376146] [2022-02-09 04:03:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:17,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:18,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:18,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643376146] [2022-02-09 04:03:18,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643376146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:18,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864150897] [2022-02-09 04:03:18,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:03:18,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:18,069 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-09 04:03:18,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:03:18,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:18,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-09 04:03:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:18,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:18,578 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 15 treesize of output 7 [2022-02-09 04:03:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:19,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:19,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:19,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:20,082 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:20,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-09 04:03:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:20,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864150897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:20,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:20,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 56 [2022-02-09 04:03:20,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773544174] [2022-02-09 04:03:20,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:20,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-09 04:03:20,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-09 04:03:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2959, Unknown=0, NotChecked=0, Total=3192 [2022-02-09 04:03:20,337 INFO L87 Difference]: Start difference. First operand 7077 states and 21523 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:24,275 INFO L93 Difference]: Finished difference Result 12161 states and 36108 transitions. [2022-02-09 04:03:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-09 04:03:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:24,297 INFO L225 Difference]: With dead ends: 12161 [2022-02-09 04:03:24,297 INFO L226 Difference]: Without dead ends: 12084 [2022-02-09 04:03:24,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=633, Invalid=8873, Unknown=0, NotChecked=0, Total=9506 [2022-02-09 04:03:24,298 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 282 mSDsluCounter, 5527 mSDsCounter, 0 mSdLazyCounter, 5358 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 5892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 470 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:24,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 4039 Invalid, 5892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5358 Invalid, 0 Unknown, 470 Unchecked, 2.0s Time] [2022-02-09 04:03:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12084 states. [2022-02-09 04:03:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12084 to 7169. [2022-02-09 04:03:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 7168 states have (on average 3.0330636160714284) internal successors, (21741), 7168 states have internal predecessors, (21741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 21741 transitions. [2022-02-09 04:03:24,432 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 21741 transitions. Word has length 48 [2022-02-09 04:03:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:24,432 INFO L470 AbstractCegarLoop]: Abstraction has 7169 states and 21741 transitions. [2022-02-09 04:03:24,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 21741 transitions. [2022-02-09 04:03:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:24,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:24,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:24,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-02-09 04:03:24,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:24,642 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1825856653, now seen corresponding path program 82 times [2022-02-09 04:03:24,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:24,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511149825] [2022-02-09 04:03:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:24,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:25,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:25,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511149825] [2022-02-09 04:03:25,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511149825] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:25,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296379976] [2022-02-09 04:03:25,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-09 04:03:25,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:25,182 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:25,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-02-09 04:03:25,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-09 04:03:25,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:25,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:25,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:25,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:25,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:26,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:26,804 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:26,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:26,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:26,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:27,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296379976] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:27,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:27,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-09 04:03:27,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260134402] [2022-02-09 04:03:27,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:27,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-09 04:03:27,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-09 04:03:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-09 04:03:27,195 INFO L87 Difference]: Start difference. First operand 7169 states and 21741 transitions. Second operand has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:29,776 INFO L93 Difference]: Finished difference Result 15308 states and 45835 transitions. [2022-02-09 04:03:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-09 04:03:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:29,807 INFO L225 Difference]: With dead ends: 15308 [2022-02-09 04:03:29,807 INFO L226 Difference]: Without dead ends: 15215 [2022-02-09 04:03:29,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=467, Invalid=5695, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:03:29,808 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 314 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:29,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2827 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3520 Invalid, 0 Unknown, 316 Unchecked, 1.3s Time] [2022-02-09 04:03:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2022-02-09 04:03:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 7097. [2022-02-09 04:03:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7097 states, 7096 states have (on average 3.0386133032694476) internal successors, (21562), 7096 states have internal predecessors, (21562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 21562 transitions. [2022-02-09 04:03:30,008 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 21562 transitions. Word has length 48 [2022-02-09 04:03:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:30,008 INFO L470 AbstractCegarLoop]: Abstraction has 7097 states and 21562 transitions. [2022-02-09 04:03:30,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 21562 transitions. [2022-02-09 04:03:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:30,018 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:30,018 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:30,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-02-09 04:03:30,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:30,219 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1173462551, now seen corresponding path program 83 times [2022-02-09 04:03:30,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:30,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096151129] [2022-02-09 04:03:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:30,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:30,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:30,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096151129] [2022-02-09 04:03:30,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096151129] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:30,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947854694] [2022-02-09 04:03:30,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-09 04:03:30,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:30,762 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:30,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-02-09 04:03:30,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-09 04:03:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:30,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-09 04:03:30,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:30,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:31,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:31,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:32,407 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:32,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:32,539 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:32,539 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:32,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947854694] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:32,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:32,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 54 [2022-02-09 04:03:32,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501426039] [2022-02-09 04:03:32,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:32,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-09 04:03:32,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-09 04:03:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2757, Unknown=0, NotChecked=0, Total=2970 [2022-02-09 04:03:32,787 INFO L87 Difference]: Start difference. First operand 7097 states and 21562 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:35,570 INFO L93 Difference]: Finished difference Result 15262 states and 45725 transitions. [2022-02-09 04:03:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:03:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:35,601 INFO L225 Difference]: With dead ends: 15262 [2022-02-09 04:03:35,601 INFO L226 Difference]: Without dead ends: 15227 [2022-02-09 04:03:35,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=446, Invalid=5716, Unknown=0, NotChecked=0, Total=6162 [2022-02-09 04:03:35,602 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 233 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 4361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:35,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 3479 Invalid, 4361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-09 04:03:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2022-02-09 04:03:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 7109. [2022-02-09 04:03:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7109 states, 7108 states have (on average 3.037563308947665) internal successors, (21591), 7108 states have internal predecessors, (21591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 21591 transitions. [2022-02-09 04:03:35,783 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 21591 transitions. Word has length 48 [2022-02-09 04:03:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:35,784 INFO L470 AbstractCegarLoop]: Abstraction has 7109 states and 21591 transitions. [2022-02-09 04:03:35,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 21591 transitions. [2022-02-09 04:03:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:35,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:35,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:35,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-02-09 04:03:35,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:35,996 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2049645015, now seen corresponding path program 84 times [2022-02-09 04:03:35,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:35,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124392364] [2022-02-09 04:03:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:35,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:36,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:36,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124392364] [2022-02-09 04:03:36,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124392364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:36,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172973291] [2022-02-09 04:03:36,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-09 04:03:36,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:36,553 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:36,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-02-09 04:03:36,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-09 04:03:36,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:36,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-09 04:03:36,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:36,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:36,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:37,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:38,581 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:38,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-09 04:03:38,804 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:38,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-09 04:03:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:39,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172973291] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:39,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:39,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 60 [2022-02-09 04:03:39,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603838214] [2022-02-09 04:03:39,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:39,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-09 04:03:39,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-09 04:03:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3406, Unknown=0, NotChecked=0, Total=3660 [2022-02-09 04:03:39,061 INFO L87 Difference]: Start difference. First operand 7109 states and 21591 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:41,971 INFO L93 Difference]: Finished difference Result 13044 states and 39176 transitions. [2022-02-09 04:03:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-09 04:03:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:41,997 INFO L225 Difference]: With dead ends: 13044 [2022-02-09 04:03:41,997 INFO L226 Difference]: Without dead ends: 13000 [2022-02-09 04:03:41,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=567, Invalid=7265, Unknown=0, NotChecked=0, Total=7832 [2022-02-09 04:03:41,998 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 379 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:41,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 2937 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-09 04:03:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13000 states. [2022-02-09 04:03:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13000 to 7105. [2022-02-09 04:03:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 7104 states have (on average 3.037725225225225) internal successors, (21580), 7104 states have internal predecessors, (21580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 21580 transitions. [2022-02-09 04:03:42,160 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 21580 transitions. Word has length 48 [2022-02-09 04:03:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:42,160 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 21580 transitions. [2022-02-09 04:03:42,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 21580 transitions. [2022-02-09 04:03:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:42,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:42,168 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:42,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-02-09 04:03:42,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:42,369 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1315177691, now seen corresponding path program 85 times [2022-02-09 04:03:42,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:42,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114623711] [2022-02-09 04:03:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:42,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:42,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:42,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114623711] [2022-02-09 04:03:42,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114623711] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:42,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205164432] [2022-02-09 04:03:42,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-09 04:03:42,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:42,902 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:42,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-02-09 04:03:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:42,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:42,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:43,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:43,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:43,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:44,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:44,627 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:44,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:44,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:44,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205164432] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:44,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:44,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 55 [2022-02-09 04:03:44,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142553537] [2022-02-09 04:03:44,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:44,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-09 04:03:44,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-09 04:03:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2862, Unknown=0, NotChecked=0, Total=3080 [2022-02-09 04:03:45,017 INFO L87 Difference]: Start difference. First operand 7105 states and 21580 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:47,680 INFO L93 Difference]: Finished difference Result 14356 states and 42884 transitions. [2022-02-09 04:03:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-09 04:03:47,680 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:47,709 INFO L225 Difference]: With dead ends: 14356 [2022-02-09 04:03:47,709 INFO L226 Difference]: Without dead ends: 14347 [2022-02-09 04:03:47,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=463, Invalid=6179, Unknown=0, NotChecked=0, Total=6642 [2022-02-09 04:03:47,710 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 342 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:47,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3478 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3768 Invalid, 0 Unknown, 253 Unchecked, 1.4s Time] [2022-02-09 04:03:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2022-02-09 04:03:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 7129. [2022-02-09 04:03:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 7128 states have (on average 3.0356341189674523) internal successors, (21638), 7128 states have internal predecessors, (21638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 21638 transitions. [2022-02-09 04:03:47,883 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 21638 transitions. Word has length 48 [2022-02-09 04:03:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 7129 states and 21638 transitions. [2022-02-09 04:03:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 21638 transitions. [2022-02-09 04:03:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:47,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:47,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:47,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-02-09 04:03:48,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:48,092 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash 945173471, now seen corresponding path program 86 times [2022-02-09 04:03:48,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:48,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23691374] [2022-02-09 04:03:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:48,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:48,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:48,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23691374] [2022-02-09 04:03:48,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23691374] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:48,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905405575] [2022-02-09 04:03:48,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-09 04:03:48,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:48,621 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:48,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-02-09 04:03:48,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-09 04:03:48,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:48,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:48,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:49,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:49,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:50,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:50,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:50,467 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:50,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-09 04:03:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:50,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905405575] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:50,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:50,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 55 [2022-02-09 04:03:50,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519677302] [2022-02-09 04:03:50,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:50,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-09 04:03:50,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-09 04:03:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2862, Unknown=0, NotChecked=0, Total=3080 [2022-02-09 04:03:50,724 INFO L87 Difference]: Start difference. First operand 7129 states and 21638 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 04:03:53,312 INFO L93 Difference]: Finished difference Result 15274 states and 45750 transitions. [2022-02-09 04:03:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-09 04:03:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 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 48 [2022-02-09 04:03:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 04:03:53,341 INFO L225 Difference]: With dead ends: 15274 [2022-02-09 04:03:53,341 INFO L226 Difference]: Without dead ends: 15219 [2022-02-09 04:03:53,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=461, Invalid=5859, Unknown=0, NotChecked=0, Total=6320 [2022-02-09 04:03:53,342 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 305 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:53,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2839 Invalid, 3623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 04:03:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2022-02-09 04:03:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 7101. [2022-02-09 04:03:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7101 states, 7100 states have (on average 3.037887323943662) internal successors, (21569), 7100 states have internal predecessors, (21569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 21569 transitions. [2022-02-09 04:03:53,535 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 21569 transitions. Word has length 48 [2022-02-09 04:03:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 04:03:53,535 INFO L470 AbstractCegarLoop]: Abstraction has 7101 states and 21569 transitions. [2022-02-09 04:03:53,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 04:03:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 21569 transitions. [2022-02-09 04:03:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-09 04:03:53,544 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 04:03:53,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 04:03:53,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-02-09 04:03:53,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-02-09 04:03:53,752 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 04:03:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 04:03:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 32030231, now seen corresponding path program 87 times [2022-02-09 04:03:53,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 04:03:53,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828103982] [2022-02-09 04:03:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 04:03:53,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 04:03:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 04:03:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:54,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 04:03:54,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828103982] [2022-02-09 04:03:54,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828103982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 04:03:54,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529963558] [2022-02-09 04:03:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-09 04:03:54,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 04:03:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 04:03:54,288 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 04:03:54,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-02-09 04:03:54,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-09 04:03:54,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-09 04:03:54,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-09 04:03:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 04:03:54,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:54,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-09 04:03:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:55,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 04:03:56,197 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:56,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-09 04:03:56,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-09 04:03:56,348 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-09 04:03:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 04:03:56,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529963558] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 04:03:56,599 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 04:03:56,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 59 [2022-02-09 04:03:56,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680374317] [2022-02-09 04:03:56,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 04:03:56,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-09 04:03:56,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 04:03:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-09 04:03:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3292, Unknown=0, NotChecked=0, Total=3540 [2022-02-09 04:03:56,600 INFO L87 Difference]: Start difference. First operand 7101 states and 21569 transitions. Second operand has 60 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-09 04:03:59,439 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 [2022-02-09 04:03:59,455 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-09 04:03:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-09 04:03:59,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=553, Invalid=7103, Unknown=0, NotChecked=0, Total=7656 [2022-02-09 04:03:59,459 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 278 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-09 04:03:59,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1607 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3021 Invalid, 0 Unknown, 165 Unchecked, 1.2s Time] [2022-02-09 04:03:59,460 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-09 04:03:59,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-02-09 04:03:59,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-02-09 04:03:59,668 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (7101states) and FLOYD_HOARE automaton (currently 41 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5626 states constructed, input type IntersectNwa). [2022-02-09 04:03:59,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-09 04:03:59,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-09 04:03:59,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-09 04:03:59,672 INFO L732 BasicCegarLoop]: Path program histogram: [89, 87, 2, 1] [2022-02-09 04:03:59,675 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 04:03:59,675 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 04:03:59,677 INFO L202 PluginConnector]: Adding new model queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 04:03:59 BasicIcfg [2022-02-09 04:03:59,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 04:03:59,677 INFO L158 Benchmark]: Toolchain (without parser) took 747624.14ms. Allocated memory was 187.7MB in the beginning and 767.6MB in the end (delta: 579.9MB). Free memory was 151.3MB in the beginning and 490.1MB in the end (delta: -338.8MB). Peak memory consumption was 241.7MB. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 187.7MB. Free memory was 152.6MB in the beginning and 152.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.20ms. Allocated memory is still 187.7MB. Free memory was 151.2MB in the beginning and 149.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 INFO L158 Benchmark]: Boogie Preprocessor took 22.86ms. Allocated memory is still 187.7MB. Free memory was 149.7MB in the beginning and 148.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 INFO L158 Benchmark]: RCFGBuilder took 199.47ms. Allocated memory is still 187.7MB. Free memory was 148.5MB in the beginning and 138.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 INFO L158 Benchmark]: TraceAbstraction took 747377.66ms. Allocated memory was 187.7MB in the beginning and 767.6MB in the end (delta: 579.9MB). Free memory was 137.8MB in the beginning and 490.1MB in the end (delta: -352.3MB). Peak memory consumption was 228.1MB. Max. memory is 8.0GB. [2022-02-09 04:03:59,677 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 0.12ms. Allocated memory is still 187.7MB. Free memory was 152.6MB in the beginning and 152.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.20ms. Allocated memory is still 187.7MB. Free memory was 151.2MB in the beginning and 149.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.86ms. Allocated memory is still 187.7MB. Free memory was 149.7MB in the beginning and 148.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 199.47ms. Allocated memory is still 187.7MB. Free memory was 148.5MB in the beginning and 138.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 747377.66ms. Allocated memory was 187.7MB in the beginning and 767.6MB in the end (delta: 579.9MB). Free memory was 137.8MB in the beginning and 490.1MB in the end (delta: -352.3MB). Peak memory consumption was 228.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 96]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (7101states) and FLOYD_HOARE automaton (currently 41 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5626 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7101states) and FLOYD_HOARE automaton (currently 41 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5626 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7101states) and FLOYD_HOARE automaton (currently 41 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5626 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7101states) and FLOYD_HOARE automaton (currently 41 states, 60 states before enhancement),while ReachableStatesComputation was computing reachable states (5626 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 747.3s, OverallIterations: 179, TraceHistogramMax: 2, PathProgramHistogramMax: 89, EmptinessCheckTime: 1.1s, AutomataDifference: 368.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66861 SdHoareTripleChecker+Valid, 167.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66861 mSDsluCounter, 344206 SdHoareTripleChecker+Invalid, 141.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8393 IncrementalHoareTripleChecker+Unchecked, 462879 mSDsCounter, 11553 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 441114 IncrementalHoareTripleChecker+Invalid, 461060 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11553 mSolverCounterUnsat, 19999 mSDtfsCounter, 441114 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20848 GetRequests, 8957 SyntacticMatches, 1208 SemanticMatches, 10683 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227319 ImplicationChecksByTransitivity, 327.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7334occurred in iteration=132, InterpolantAutomatonStates: 6586, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.2s AutomataMinimizationTime, 178 MinimizatonAttempts, 736086 StatesRemovedByMinimization, 174 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 318.4s InterpolantComputationTime, 14261 NumberOfCodeBlocks, 14261 NumberOfCodeBlocksAsserted, 539 NumberOfCheckSat, 20769 ConstructedInterpolants, 224 QuantifiedInterpolants, 493521 SizeOfPredicates, 2598 NumberOfNonLiveVariables, 17909 ConjunctsInSsa, 5806 ConjunctsInUnsatCore, 528 InterpolantComputations, 5 PerfectInterpolantSequences, 91/4681 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