/usr/bin/java -Xmx16000000000 -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/array-sum.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 06:37:22,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 06:37:22,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 06:37:22,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 06:37:22,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 06:37:22,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 06:37:22,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 06:37:22,749 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 [2022-01-18 06:37:22,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 06:37:22,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 06:37:22,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 06:37:22,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 06:37:22,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 06:37:22,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 06:37:22,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 06:37:22,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 06:37:22,780 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 06:37:22,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 06:37:22,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 06:37:22,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 06:37:22,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 06:37:22,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:37:22,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 06:37:22,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 06:37:22,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 06:37:22,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 06:37:22,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 06:37:22,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 06:37:23,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 06:37:23,001 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 06:37:23,002 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 06:37:23,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum.wvr.bpl [2022-01-18 06:37:23,003 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/array-sum.wvr.bpl' [2022-01-18 06:37:23,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 06:37:23,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 06:37:23,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 06:37:23,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 06:37:23,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 06:37:23,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,063 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 06:37:23,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 06:37:23,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 06:37:23,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 06:37:23,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 06:37:23,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 06:37:23,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 06:37:23,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 06:37:23,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 06:37:23,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/1) ... [2022-01-18 06:37:23,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:37:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:23,109 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) [2022-01-18 06:37:23,115 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 [2022-01-18 06:37:23,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 06:37:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 06:37:23,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 06:37:23,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 06:37:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 06:37:23,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 06:37:23,136 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 06:37:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 06:37:23,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 06:37:23,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 06:37:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 06:37:23,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 06:37:23,139 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 06:37:23,174 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 06:37:23,175 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 06:37:23,244 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 06:37:23,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 06:37:23,250 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 06:37:23,252 INFO L202 PluginConnector]: Adding new model array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:37:23 BoogieIcfgContainer [2022-01-18 06:37:23,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 06:37:23,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 06:37:23,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 06:37:23,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 06:37:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:37:23" (1/2) ... [2022-01-18 06:37:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e650368 and model type array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:37:23, skipping insertion in model container [2022-01-18 06:37:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:37:23" (2/2) ... [2022-01-18 06:37:23,259 INFO L111 eAbstractionObserver]: Analyzing ICFG array-sum.wvr.bpl [2022-01-18 06:37:23,268 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 06:37:23,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 06:37:23,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 06:37:23,269 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 06:37:23,298 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 06:37:23,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 06:37:23,356 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, 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 [2022-01-18 06:37:23,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 06:37:23,369 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 32 transitions, 88 flow [2022-01-18 06:37:23,407 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 193 states, 192 states have (on average 2.8802083333333335) internal successors, (553), 192 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 192 states have (on average 2.8802083333333335) internal successors, (553), 192 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 06:37:23,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:23,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:23,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 148747361, now seen corresponding path program 1 times [2022-01-18 06:37:23,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257124971] [2022-01-18 06:37:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:23,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:23,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:23,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257124971] [2022-01-18 06:37:23,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257124971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:37:23,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:37:23,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 06:37:23,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238661584] [2022-01-18 06:37:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:37:23,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:37:23,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:37:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:37:23,594 INFO L87 Difference]: Start difference. First operand has 193 states, 192 states have (on average 2.8802083333333335) internal successors, (553), 192 states have internal predecessors, (553), 0 states have call successors, (0), 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 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:23,674 INFO L93 Difference]: Finished difference Result 298 states and 858 transitions. [2022-01-18 06:37:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:37:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 06:37:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:23,695 INFO L225 Difference]: With dead ends: 298 [2022-01-18 06:37:23,695 INFO L226 Difference]: Without dead ends: 283 [2022-01-18 06:37:23,696 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 [2022-01-18 06:37:23,701 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:23,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:37:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-18 06:37:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 230. [2022-01-18 06:37:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.8820960698689957) internal successors, (660), 229 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 660 transitions. [2022-01-18 06:37:23,796 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 660 transitions. Word has length 18 [2022-01-18 06:37:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:23,797 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 660 transitions. [2022-01-18 06:37:23,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 660 transitions. [2022-01-18 06:37:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 06:37:23,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:23,800 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] [2022-01-18 06:37:23,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 06:37:23,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 191403910, now seen corresponding path program 1 times [2022-01-18 06:37:23,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:23,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33052322] [2022-01-18 06:37:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:23,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:23,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:23,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33052322] [2022-01-18 06:37:23,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33052322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:37:23,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:37:23,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:37:23,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823839087] [2022-01-18 06:37:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:37:23,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:37:23,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:37:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:37:23,860 INFO L87 Difference]: Start difference. First operand 230 states and 660 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:23,910 INFO L93 Difference]: Finished difference Result 249 states and 716 transitions. [2022-01-18 06:37:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:37:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 06:37:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:23,913 INFO L225 Difference]: With dead ends: 249 [2022-01-18 06:37:23,914 INFO L226 Difference]: Without dead ends: 249 [2022-01-18 06:37:23,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:37:23,915 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:23,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:37:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-18 06:37:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 224. [2022-01-18 06:37:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.89237668161435) internal successors, (645), 223 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 645 transitions. [2022-01-18 06:37:23,934 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 645 transitions. Word has length 21 [2022-01-18 06:37:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:23,934 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 645 transitions. [2022-01-18 06:37:23,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 645 transitions. [2022-01-18 06:37:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 06:37:23,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:23,936 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] [2022-01-18 06:37:23,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 06:37:23,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash 364622328, now seen corresponding path program 1 times [2022-01-18 06:37:23,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070003329] [2022-01-18 06:37:23,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:23,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:23,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:23,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070003329] [2022-01-18 06:37:23,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070003329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:37:23,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:37:23,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:37:23,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197237208] [2022-01-18 06:37:23,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:37:23,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 06:37:23,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 06:37:23,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:37:23,988 INFO L87 Difference]: Start difference. First operand 224 states and 645 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:24,043 INFO L93 Difference]: Finished difference Result 332 states and 966 transitions. [2022-01-18 06:37:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:37:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 06:37:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:24,046 INFO L225 Difference]: With dead ends: 332 [2022-01-18 06:37:24,047 INFO L226 Difference]: Without dead ends: 332 [2022-01-18 06:37:24,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 06:37:24,048 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 93 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:24,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:37:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-18 06:37:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 260. [2022-01-18 06:37:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.9034749034749034) internal successors, (752), 259 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 752 transitions. [2022-01-18 06:37:24,066 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 752 transitions. Word has length 21 [2022-01-18 06:37:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:24,066 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 752 transitions. [2022-01-18 06:37:24,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 752 transitions. [2022-01-18 06:37:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:24,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:24,069 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] [2022-01-18 06:37:24,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 06:37:24,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:24,070 INFO L85 PathProgramCache]: Analyzing trace with hash -164446029, now seen corresponding path program 1 times [2022-01-18 06:37:24,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:24,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701755742] [2022-01-18 06:37:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:24,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:24,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:24,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701755742] [2022-01-18 06:37:24,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701755742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:24,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042581700] [2022-01-18 06:37:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:24,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:24,627 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) [2022-01-18 06:37:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 06:37:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:24,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:37:24,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:25,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-01-18 06:37:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:25,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:25,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:25,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 22 [2022-01-18 06:37:25,300 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:25,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2022-01-18 06:37:25,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:25,352 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:25,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042581700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:25,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:25,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-01-18 06:37:25,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611379744] [2022-01-18 06:37:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:25,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:37:25,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:37:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:37:25,458 INFO L87 Difference]: Start difference. First operand 260 states and 752 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:25,953 INFO L93 Difference]: Finished difference Result 535 states and 1542 transitions. [2022-01-18 06:37:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 06:37:25,953 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:25,957 INFO L225 Difference]: With dead ends: 535 [2022-01-18 06:37:25,957 INFO L226 Difference]: Without dead ends: 520 [2022-01-18 06:37:25,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:37:25,958 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 252 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:25,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 99 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:37:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-18 06:37:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 346. [2022-01-18 06:37:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.8956521739130436) internal successors, (999), 345 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 999 transitions. [2022-01-18 06:37:25,992 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 999 transitions. Word has length 24 [2022-01-18 06:37:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:25,992 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 999 transitions. [2022-01-18 06:37:25,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 999 transitions. [2022-01-18 06:37:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:25,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:25,994 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] [2022-01-18 06:37:26,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:26,211 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 [2022-01-18 06:37:26,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -463670379, now seen corresponding path program 2 times [2022-01-18 06:37:26,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:26,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783773880] [2022-01-18 06:37:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:26,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:26,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:26,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783773880] [2022-01-18 06:37:26,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783773880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:26,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041845736] [2022-01-18 06:37:26,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:37:26,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:26,518 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) [2022-01-18 06:37:26,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 06:37:26,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:37:26,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:26,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:37:26,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:26,850 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:26,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 73 [2022-01-18 06:37:26,863 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:26,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-01-18 06:37:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:26,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:27,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:27,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2022-01-18 06:37:27,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:27,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2022-01-18 06:37:27,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:27,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041845736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:27,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:27,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 06:37:27,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962968593] [2022-01-18 06:37:27,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:27,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 06:37:27,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 06:37:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-01-18 06:37:27,312 INFO L87 Difference]: Start difference. First operand 346 states and 999 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:29,340 INFO L93 Difference]: Finished difference Result 1430 states and 4135 transitions. [2022-01-18 06:37:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:37:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:29,349 INFO L225 Difference]: With dead ends: 1430 [2022-01-18 06:37:29,349 INFO L226 Difference]: Without dead ends: 1400 [2022-01-18 06:37:29,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=647, Invalid=2215, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:37:29,351 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 609 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:29,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 191 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:37:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-01-18 06:37:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 473. [2022-01-18 06:37:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 2.9661016949152543) internal successors, (1400), 472 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1400 transitions. [2022-01-18 06:37:29,372 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1400 transitions. Word has length 24 [2022-01-18 06:37:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:29,372 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1400 transitions. [2022-01-18 06:37:29,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1400 transitions. [2022-01-18 06:37:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:29,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:29,374 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] [2022-01-18 06:37:29,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:29,586 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 [2022-01-18 06:37:29,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1613103477, now seen corresponding path program 3 times [2022-01-18 06:37:29,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:29,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323668116] [2022-01-18 06:37:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:29,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:29,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:29,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323668116] [2022-01-18 06:37:29,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323668116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097459139] [2022-01-18 06:37:29,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:37:29,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:29,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:29,776 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) [2022-01-18 06:37:29,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 06:37:29,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 06:37:29,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:29,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 06:37:29,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:29,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-01-18 06:37:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:30,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:30,079 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:30,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 22 [2022-01-18 06:37:30,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:30,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 18 [2022-01-18 06:37:30,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:30,108 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:30,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097459139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:30,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:30,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-01-18 06:37:30,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561013581] [2022-01-18 06:37:30,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:30,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:37:30,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:37:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:37:30,219 INFO L87 Difference]: Start difference. First operand 473 states and 1400 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:30,716 INFO L93 Difference]: Finished difference Result 745 states and 2174 transitions. [2022-01-18 06:37:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 06:37:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:30,721 INFO L225 Difference]: With dead ends: 745 [2022-01-18 06:37:30,721 INFO L226 Difference]: Without dead ends: 730 [2022-01-18 06:37:30,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:37:30,722 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 96 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:30,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 148 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:37:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-01-18 06:37:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 489. [2022-01-18 06:37:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 2.9508196721311477) internal successors, (1440), 488 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1440 transitions. [2022-01-18 06:37:30,737 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1440 transitions. Word has length 24 [2022-01-18 06:37:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:30,738 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1440 transitions. [2022-01-18 06:37:30,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1440 transitions. [2022-01-18 06:37:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:30,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:30,739 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] [2022-01-18 06:37:30,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:30,959 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 [2022-01-18 06:37:30,959 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash -882860491, now seen corresponding path program 4 times [2022-01-18 06:37:30,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:30,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537679798] [2022-01-18 06:37:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:30,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:31,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537679798] [2022-01-18 06:37:31,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537679798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887403719] [2022-01-18 06:37:31,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:37:31,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:31,199 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) [2022-01-18 06:37:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 06:37:31,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:37:31,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:31,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:37:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:31,407 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:31,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-01-18 06:37:31,414 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:31,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-01-18 06:37:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:31,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:31,663 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:31,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 22 [2022-01-18 06:37:31,670 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:31,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2022-01-18 06:37:31,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:31,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:31,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887403719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:31,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:31,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2022-01-18 06:37:31,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852718528] [2022-01-18 06:37:31,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:31,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:37:31,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:37:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:37:31,806 INFO L87 Difference]: Start difference. First operand 489 states and 1440 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:32,190 INFO L93 Difference]: Finished difference Result 785 states and 2319 transitions. [2022-01-18 06:37:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 06:37:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:32,194 INFO L225 Difference]: With dead ends: 785 [2022-01-18 06:37:32,194 INFO L226 Difference]: Without dead ends: 770 [2022-01-18 06:37:32,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:37:32,195 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 193 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:32,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 152 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 313 Invalid, 0 Unknown, 75 Unchecked, 0.2s Time] [2022-01-18 06:37:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-01-18 06:37:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 504. [2022-01-18 06:37:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.9761431411530817) internal successors, (1497), 503 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1497 transitions. [2022-01-18 06:37:32,209 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1497 transitions. Word has length 24 [2022-01-18 06:37:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:32,209 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1497 transitions. [2022-01-18 06:37:32,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1497 transitions. [2022-01-18 06:37:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:32,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:32,211 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] [2022-01-18 06:37:32,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:32,433 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 [2022-01-18 06:37:32,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -207846031, now seen corresponding path program 5 times [2022-01-18 06:37:32,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444844983] [2022-01-18 06:37:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:32,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:32,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:32,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444844983] [2022-01-18 06:37:32,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444844983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:32,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546124653] [2022-01-18 06:37:32,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:37:32,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:32,664 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) [2022-01-18 06:37:32,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 06:37:32,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:37:32,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:32,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:37:32,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:32,864 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:32,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-01-18 06:37:32,870 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:32,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2022-01-18 06:37:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:33,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:33,263 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:33,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 22 [2022-01-18 06:37:33,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:33,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2022-01-18 06:37:33,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:33,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:33,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546124653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:33,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:33,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 23 [2022-01-18 06:37:33,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566738776] [2022-01-18 06:37:33,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:33,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 06:37:33,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 06:37:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-18 06:37:33,433 INFO L87 Difference]: Start difference. First operand 504 states and 1497 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:37,960 INFO L93 Difference]: Finished difference Result 1743 states and 5052 transitions. [2022-01-18 06:37:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 06:37:37,963 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:37,972 INFO L225 Difference]: With dead ends: 1743 [2022-01-18 06:37:37,973 INFO L226 Difference]: Without dead ends: 1698 [2022-01-18 06:37:37,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2413, Invalid=8929, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 06:37:37,976 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 450 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:37,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 352 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1461 Invalid, 0 Unknown, 312 Unchecked, 0.9s Time] [2022-01-18 06:37:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-01-18 06:37:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 537. [2022-01-18 06:37:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 3.0167910447761193) internal successors, (1617), 536 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1617 transitions. [2022-01-18 06:37:38,000 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1617 transitions. Word has length 24 [2022-01-18 06:37:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:38,000 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 1617 transitions. [2022-01-18 06:37:38,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1617 transitions. [2022-01-18 06:37:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:37:38,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:38,002 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] [2022-01-18 06:37:38,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 06:37:38,218 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 [2022-01-18 06:37:38,218 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:38,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1216410503, now seen corresponding path program 6 times [2022-01-18 06:37:38,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:38,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584859990] [2022-01-18 06:37:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:38,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:38,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:38,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584859990] [2022-01-18 06:37:38,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584859990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:38,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292540103] [2022-01-18 06:37:38,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:37:38,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:38,436 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) [2022-01-18 06:37:38,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 06:37:38,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 06:37:38,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:38,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:37:38,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:38,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:38,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-01-18 06:37:38,642 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-18 06:37:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:38,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:38,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:38,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 22 [2022-01-18 06:37:38,881 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:37:38,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 18 [2022-01-18 06:37:38,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:37:38,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2022-01-18 06:37:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292540103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:39,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:39,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 18 [2022-01-18 06:37:39,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035231730] [2022-01-18 06:37:39,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:39,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 06:37:39,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 06:37:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-01-18 06:37:39,001 INFO L87 Difference]: Start difference. First operand 537 states and 1617 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:40,955 INFO L93 Difference]: Finished difference Result 1448 states and 4322 transitions. [2022-01-18 06:37:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:37:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:37:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:40,963 INFO L225 Difference]: With dead ends: 1448 [2022-01-18 06:37:40,964 INFO L226 Difference]: Without dead ends: 1421 [2022-01-18 06:37:40,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=696, Invalid=2060, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:37:40,967 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 269 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:40,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 224 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 785 Invalid, 0 Unknown, 159 Unchecked, 0.5s Time] [2022-01-18 06:37:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2022-01-18 06:37:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 542. [2022-01-18 06:37:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.0129390018484288) internal successors, (1630), 541 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1630 transitions. [2022-01-18 06:37:40,988 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1630 transitions. Word has length 24 [2022-01-18 06:37:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:40,989 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1630 transitions. [2022-01-18 06:37:40,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1630 transitions. [2022-01-18 06:37:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:40,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:40,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:41,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:41,203 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 [2022-01-18 06:37:41,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2091300250, now seen corresponding path program 7 times [2022-01-18 06:37:41,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:41,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356354167] [2022-01-18 06:37:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:41,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:41,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:41,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356354167] [2022-01-18 06:37:41,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356354167] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:41,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032375762] [2022-01-18 06:37:41,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:37:41,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:41,256 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) [2022-01-18 06:37:41,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 06:37:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:41,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:41,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:41,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032375762] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:41,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:41,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:37:41,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543115096] [2022-01-18 06:37:41,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:41,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:37:41,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:37:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:37:41,524 INFO L87 Difference]: Start difference. First operand 542 states and 1630 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:42,494 INFO L93 Difference]: Finished difference Result 2382 states and 6924 transitions. [2022-01-18 06:37:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:37:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:42,505 INFO L225 Difference]: With dead ends: 2382 [2022-01-18 06:37:42,506 INFO L226 Difference]: Without dead ends: 2382 [2022-01-18 06:37:42,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=714, Invalid=2148, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:37:42,507 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 379 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:42,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 226 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 06:37:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2022-01-18 06:37:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 685. [2022-01-18 06:37:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.1827485380116958) internal successors, (2177), 684 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2177 transitions. [2022-01-18 06:37:42,537 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2177 transitions. Word has length 27 [2022-01-18 06:37:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:42,539 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 2177 transitions. [2022-01-18 06:37:42,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2177 transitions. [2022-01-18 06:37:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:42,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:42,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:42,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:42,754 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 [2022-01-18 06:37:42,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1715146358, now seen corresponding path program 8 times [2022-01-18 06:37:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:42,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133674859] [2022-01-18 06:37:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:42,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:42,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133674859] [2022-01-18 06:37:42,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133674859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100398153] [2022-01-18 06:37:42,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:37:42,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:42,809 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) [2022-01-18 06:37:42,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 06:37:42,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:37:42,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:42,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:42,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:42,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:43,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100398153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:43,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:43,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 06:37:43,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390866279] [2022-01-18 06:37:43,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:43,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:37:43,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:37:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:37:43,066 INFO L87 Difference]: Start difference. First operand 685 states and 2177 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:44,892 INFO L93 Difference]: Finished difference Result 3706 states and 10706 transitions. [2022-01-18 06:37:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 06:37:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:44,904 INFO L225 Difference]: With dead ends: 3706 [2022-01-18 06:37:44,904 INFO L226 Difference]: Without dead ends: 3706 [2022-01-18 06:37:44,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4308 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2378, Invalid=8752, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 06:37:44,908 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 638 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:44,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 294 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:37:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2022-01-18 06:37:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 689. [2022-01-18 06:37:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 3.193313953488372) internal successors, (2197), 688 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2197 transitions. [2022-01-18 06:37:44,944 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2197 transitions. Word has length 27 [2022-01-18 06:37:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:44,944 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 2197 transitions. [2022-01-18 06:37:44,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2197 transitions. [2022-01-18 06:37:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:44,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:44,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:44,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:45,168 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 [2022-01-18 06:37:45,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1909047026, now seen corresponding path program 9 times [2022-01-18 06:37:45,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:45,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474713007] [2022-01-18 06:37:45,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:45,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:45,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474713007] [2022-01-18 06:37:45,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474713007] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994889788] [2022-01-18 06:37:45,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:37:45,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:45,227 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) [2022-01-18 06:37:45,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 06:37:45,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:37:45,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:45,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:45,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994889788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:45,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:45,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 06:37:45,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594640775] [2022-01-18 06:37:45,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:45,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:37:45,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:45,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:37:45,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:37:45,474 INFO L87 Difference]: Start difference. First operand 689 states and 2197 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:46,455 INFO L93 Difference]: Finished difference Result 3048 states and 8766 transitions. [2022-01-18 06:37:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 06:37:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:46,470 INFO L225 Difference]: With dead ends: 3048 [2022-01-18 06:37:46,470 INFO L226 Difference]: Without dead ends: 3048 [2022-01-18 06:37:46,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1095, Invalid=3327, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:37:46,472 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 517 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:46,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 235 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:37:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2022-01-18 06:37:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 679. [2022-01-18 06:37:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.1814159292035398) internal successors, (2157), 678 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2157 transitions. [2022-01-18 06:37:46,507 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2157 transitions. Word has length 27 [2022-01-18 06:37:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:46,507 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 2157 transitions. [2022-01-18 06:37:46,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2157 transitions. [2022-01-18 06:37:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:46,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:46,509 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] [2022-01-18 06:37:46,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:46,727 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 [2022-01-18 06:37:46,727 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2064323803, now seen corresponding path program 1 times [2022-01-18 06:37:46,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984848294] [2022-01-18 06:37:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:46,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:46,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984848294] [2022-01-18 06:37:46,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984848294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962679764] [2022-01-18 06:37:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:46,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:46,759 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) [2022-01-18 06:37:46,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 06:37:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:46,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 06:37:46,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:46,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:46,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962679764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:46,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:46,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 06:37:46,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848195946] [2022-01-18 06:37:46,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:46,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:37:46,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:37:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:37:46,944 INFO L87 Difference]: Start difference. First operand 679 states and 2157 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2022-01-18 06:37:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:47,092 INFO L93 Difference]: Finished difference Result 1471 states and 4421 transitions. [2022-01-18 06:37:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 06:37:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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 27 [2022-01-18 06:37:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:47,099 INFO L225 Difference]: With dead ends: 1471 [2022-01-18 06:37:47,099 INFO L226 Difference]: Without dead ends: 1453 [2022-01-18 06:37:47,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:37:47,100 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 226 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:47,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 64 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:37:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-01-18 06:37:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 959. [2022-01-18 06:37:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 3.2515657620041756) internal successors, (3115), 958 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 3115 transitions. [2022-01-18 06:37:47,123 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 3115 transitions. Word has length 27 [2022-01-18 06:37:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:47,123 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 3115 transitions. [2022-01-18 06:37:47,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 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) [2022-01-18 06:37:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 3115 transitions. [2022-01-18 06:37:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:47,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:47,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:47,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:47,339 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 [2022-01-18 06:37:47,339 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1310692250, now seen corresponding path program 10 times [2022-01-18 06:37:47,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552942251] [2022-01-18 06:37:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:47,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:47,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:47,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552942251] [2022-01-18 06:37:47,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552942251] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:47,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280184297] [2022-01-18 06:37:47,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:37:47,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:47,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:47,386 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) [2022-01-18 06:37:47,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 06:37:47,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:37:47,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:47,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:47,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:47,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:47,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280184297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:47,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:47,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 06:37:47,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049753108] [2022-01-18 06:37:47,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:47,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:37:47,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:47,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:37:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:37:47,570 INFO L87 Difference]: Start difference. First operand 959 states and 3115 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:47,863 INFO L93 Difference]: Finished difference Result 2387 states and 7369 transitions. [2022-01-18 06:37:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 06:37:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:47,870 INFO L225 Difference]: With dead ends: 2387 [2022-01-18 06:37:47,870 INFO L226 Difference]: Without dead ends: 2312 [2022-01-18 06:37:47,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:37:47,871 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 314 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:47,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 177 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:37:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-01-18 06:37:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1446. [2022-01-18 06:37:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 3.3155709342560553) internal successors, (4791), 1445 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4791 transitions. [2022-01-18 06:37:47,909 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4791 transitions. Word has length 27 [2022-01-18 06:37:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:47,909 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 4791 transitions. [2022-01-18 06:37:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4791 transitions. [2022-01-18 06:37:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:47,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:47,913 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] [2022-01-18 06:37:47,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:48,135 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 [2022-01-18 06:37:48,136 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -365824241, now seen corresponding path program 2 times [2022-01-18 06:37:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953396966] [2022-01-18 06:37:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:48,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:48,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953396966] [2022-01-18 06:37:48,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953396966] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986190708] [2022-01-18 06:37:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:37:48,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:48,175 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) [2022-01-18 06:37:48,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 06:37:48,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:37:48,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:48,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 06:37:48,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:48,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:48,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986190708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:48,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:48,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 06:37:48,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37807954] [2022-01-18 06:37:48,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:48,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:37:48,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:37:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:37:48,363 INFO L87 Difference]: Start difference. First operand 1446 states and 4791 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:48,601 INFO L93 Difference]: Finished difference Result 2562 states and 7823 transitions. [2022-01-18 06:37:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 06:37:48,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:48,608 INFO L225 Difference]: With dead ends: 2562 [2022-01-18 06:37:48,608 INFO L226 Difference]: Without dead ends: 2562 [2022-01-18 06:37:48,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:37:48,609 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 228 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:48,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 96 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:37:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2022-01-18 06:37:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 1516. [2022-01-18 06:37:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.2825082508250825) internal successors, (4973), 1515 states have internal predecessors, (4973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4973 transitions. [2022-01-18 06:37:48,652 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4973 transitions. Word has length 27 [2022-01-18 06:37:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:48,654 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 4973 transitions. [2022-01-18 06:37:48,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4973 transitions. [2022-01-18 06:37:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:48,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:48,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:48,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 06:37:48,871 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 [2022-01-18 06:37:48,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1263858044, now seen corresponding path program 11 times [2022-01-18 06:37:48,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:48,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587379525] [2022-01-18 06:37:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:48,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:48,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587379525] [2022-01-18 06:37:48,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587379525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311522807] [2022-01-18 06:37:48,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:37:48,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:48,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:48,923 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) [2022-01-18 06:37:48,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 06:37:48,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:37:48,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:48,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:48,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:49,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:49,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311522807] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:49,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:49,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:37:49,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830380809] [2022-01-18 06:37:49,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:37:49,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:37:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:37:49,105 INFO L87 Difference]: Start difference. First operand 1516 states and 4973 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:49,714 INFO L93 Difference]: Finished difference Result 4948 states and 14924 transitions. [2022-01-18 06:37:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 06:37:49,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:49,729 INFO L225 Difference]: With dead ends: 4948 [2022-01-18 06:37:49,729 INFO L226 Difference]: Without dead ends: 4948 [2022-01-18 06:37:49,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:37:49,734 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 274 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:49,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 182 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:37:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-01-18 06:37:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 1544. [2022-01-18 06:37:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 3.2773817239144525) internal successors, (5057), 1543 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 5057 transitions. [2022-01-18 06:37:49,802 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 5057 transitions. Word has length 27 [2022-01-18 06:37:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:49,802 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 5057 transitions. [2022-01-18 06:37:49,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 5057 transitions. [2022-01-18 06:37:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:49,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:49,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:49,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:50,022 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 [2022-01-18 06:37:50,023 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1176133672, now seen corresponding path program 12 times [2022-01-18 06:37:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:50,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069317208] [2022-01-18 06:37:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:50,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:50,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069317208] [2022-01-18 06:37:50,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069317208] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437120273] [2022-01-18 06:37:50,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:37:50,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:50,066 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) [2022-01-18 06:37:50,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 06:37:50,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 06:37:50,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:50,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:50,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:50,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:50,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437120273] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:50,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:37:50,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177057892] [2022-01-18 06:37:50,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:50,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:37:50,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:37:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:37:50,242 INFO L87 Difference]: Start difference. First operand 1544 states and 5057 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:51,009 INFO L93 Difference]: Finished difference Result 4977 states and 15097 transitions. [2022-01-18 06:37:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:37:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:51,025 INFO L225 Difference]: With dead ends: 4977 [2022-01-18 06:37:51,025 INFO L226 Difference]: Without dead ends: 4977 [2022-01-18 06:37:51,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:37:51,027 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 325 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:51,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 166 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:37:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2022-01-18 06:37:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 1698. [2022-01-18 06:37:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 3.2421921037124335) internal successors, (5502), 1697 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 5502 transitions. [2022-01-18 06:37:51,122 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 5502 transitions. Word has length 27 [2022-01-18 06:37:51,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:51,122 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 5502 transitions. [2022-01-18 06:37:51,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 5502 transitions. [2022-01-18 06:37:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:51,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:51,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:51,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:51,339 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 [2022-01-18 06:37:51,339 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1798101086, now seen corresponding path program 13 times [2022-01-18 06:37:51,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181569880] [2022-01-18 06:37:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:51,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:51,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181569880] [2022-01-18 06:37:51,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181569880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539021210] [2022-01-18 06:37:51,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:37:51,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:51,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:51,388 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) [2022-01-18 06:37:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 06:37:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:51,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:51,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:51,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:51,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539021210] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:51,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:51,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 06:37:51,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382148082] [2022-01-18 06:37:51,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:51,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 06:37:51,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 06:37:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:37:51,569 INFO L87 Difference]: Start difference. First operand 1698 states and 5502 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:51,915 INFO L93 Difference]: Finished difference Result 3298 states and 10264 transitions. [2022-01-18 06:37:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 06:37:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:51,925 INFO L225 Difference]: With dead ends: 3298 [2022-01-18 06:37:51,925 INFO L226 Difference]: Without dead ends: 3298 [2022-01-18 06:37:51,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:37:51,926 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 224 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:51,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 245 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:37:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2022-01-18 06:37:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2095. [2022-01-18 06:37:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 3.292263610315186) internal successors, (6894), 2094 states have internal predecessors, (6894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 6894 transitions. [2022-01-18 06:37:51,985 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 6894 transitions. Word has length 27 [2022-01-18 06:37:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:51,986 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 6894 transitions. [2022-01-18 06:37:51,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 6894 transitions. [2022-01-18 06:37:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:51,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:51,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:52,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:52,215 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 [2022-01-18 06:37:52,215 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash -373797268, now seen corresponding path program 14 times [2022-01-18 06:37:52,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:52,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251912606] [2022-01-18 06:37:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:52,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:52,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251912606] [2022-01-18 06:37:52,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251912606] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523478931] [2022-01-18 06:37:52,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:37:52,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:52,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:52,266 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) [2022-01-18 06:37:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 06:37:52,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:37:52,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:52,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:52,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523478931] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:52,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:52,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:37:52,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280579209] [2022-01-18 06:37:52,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:52,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:37:52,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:37:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:37:52,479 INFO L87 Difference]: Start difference. First operand 2095 states and 6894 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:53,067 INFO L93 Difference]: Finished difference Result 5572 states and 17373 transitions. [2022-01-18 06:37:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 06:37:53,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:53,081 INFO L225 Difference]: With dead ends: 5572 [2022-01-18 06:37:53,081 INFO L226 Difference]: Without dead ends: 5568 [2022-01-18 06:37:53,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:37:53,083 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 314 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:53,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 166 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:37:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-01-18 06:37:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 2107. [2022-01-18 06:37:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 2106 states have (on average 3.2830009496676165) internal successors, (6914), 2106 states have internal predecessors, (6914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 6914 transitions. [2022-01-18 06:37:53,161 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 6914 transitions. Word has length 27 [2022-01-18 06:37:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:53,161 INFO L470 AbstractCegarLoop]: Abstraction has 2107 states and 6914 transitions. [2022-01-18 06:37:53,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 6914 transitions. [2022-01-18 06:37:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:53,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:53,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:53,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:53,388 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 [2022-01-18 06:37:53,388 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1969066128, now seen corresponding path program 15 times [2022-01-18 06:37:53,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129530375] [2022-01-18 06:37:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:53,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:53,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129530375] [2022-01-18 06:37:53,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129530375] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875480659] [2022-01-18 06:37:53,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:37:53,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:53,441 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) [2022-01-18 06:37:53,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 06:37:53,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:37:53,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:53,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:53,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:53,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875480659] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:53,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:53,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:37:53,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891878347] [2022-01-18 06:37:53,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:53,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:37:53,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:37:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:37:53,671 INFO L87 Difference]: Start difference. First operand 2107 states and 6914 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:54,671 INFO L93 Difference]: Finished difference Result 6717 states and 20024 transitions. [2022-01-18 06:37:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:37:54,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:54,687 INFO L225 Difference]: With dead ends: 6717 [2022-01-18 06:37:54,688 INFO L226 Difference]: Without dead ends: 6717 [2022-01-18 06:37:54,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:37:54,689 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 512 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:54,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 270 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 06:37:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-01-18 06:37:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 2278. [2022-01-18 06:37:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 3.3205972771190164) internal successors, (7561), 2277 states have internal predecessors, (7561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 7561 transitions. [2022-01-18 06:37:54,781 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 7561 transitions. Word has length 27 [2022-01-18 06:37:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:54,781 INFO L470 AbstractCegarLoop]: Abstraction has 2278 states and 7561 transitions. [2022-01-18 06:37:54,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 7561 transitions. [2022-01-18 06:37:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:54,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:54,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:54,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:55,010 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 [2022-01-18 06:37:55,010 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -186416658, now seen corresponding path program 16 times [2022-01-18 06:37:55,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:55,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510937910] [2022-01-18 06:37:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:55,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:55,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510937910] [2022-01-18 06:37:55,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510937910] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121348638] [2022-01-18 06:37:55,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:37:55,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:55,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:55,062 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) [2022-01-18 06:37:55,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 06:37:55,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:37:55,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:55,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:55,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:55,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121348638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:55,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:55,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:37:55,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261428610] [2022-01-18 06:37:55,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:55,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:37:55,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:37:55,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:37:55,277 INFO L87 Difference]: Start difference. First operand 2278 states and 7561 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:56,633 INFO L93 Difference]: Finished difference Result 6560 states and 19950 transitions. [2022-01-18 06:37:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 06:37:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:56,645 INFO L225 Difference]: With dead ends: 6560 [2022-01-18 06:37:56,645 INFO L226 Difference]: Without dead ends: 6556 [2022-01-18 06:37:56,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2496 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1498, Invalid=5144, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 06:37:56,647 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 520 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:56,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 319 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:37:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-01-18 06:37:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 2278. [2022-01-18 06:37:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 3.3197189284145807) internal successors, (7559), 2277 states have internal predecessors, (7559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 7559 transitions. [2022-01-18 06:37:56,720 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 7559 transitions. Word has length 27 [2022-01-18 06:37:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:56,721 INFO L470 AbstractCegarLoop]: Abstraction has 2278 states and 7559 transitions. [2022-01-18 06:37:56,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 7559 transitions. [2022-01-18 06:37:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:56,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:56,726 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] [2022-01-18 06:37:56,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:56,947 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 [2022-01-18 06:37:56,947 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -274598579, now seen corresponding path program 3 times [2022-01-18 06:37:56,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082419070] [2022-01-18 06:37:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:56,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:56,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082419070] [2022-01-18 06:37:56,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082419070] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:56,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761167760] [2022-01-18 06:37:56,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:37:56,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:56,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:56,987 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) [2022-01-18 06:37:57,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 06:37:57,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 06:37:57,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:57,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 06:37:57,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:57,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:57,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761167760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:57,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:57,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 06:37:57,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479713227] [2022-01-18 06:37:57,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:57,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 06:37:57,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 06:37:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:37:57,150 INFO L87 Difference]: Start difference. First operand 2278 states and 7559 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:57,277 INFO L93 Difference]: Finished difference Result 2906 states and 9295 transitions. [2022-01-18 06:37:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 06:37:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:57,284 INFO L225 Difference]: With dead ends: 2906 [2022-01-18 06:37:57,285 INFO L226 Difference]: Without dead ends: 2906 [2022-01-18 06:37:57,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:37:57,285 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 124 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:57,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 102 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:37:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2022-01-18 06:37:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2121. [2022-01-18 06:37:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2120 states have (on average 3.3141509433962266) internal successors, (7026), 2120 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 7026 transitions. [2022-01-18 06:37:57,332 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 7026 transitions. Word has length 27 [2022-01-18 06:37:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:57,332 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 7026 transitions. [2022-01-18 06:37:57,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 7026 transitions. [2022-01-18 06:37:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:57,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:57,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:57,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:57,551 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 [2022-01-18 06:37:57,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash -995298344, now seen corresponding path program 17 times [2022-01-18 06:37:57,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:57,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908185048] [2022-01-18 06:37:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:57,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:57,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:57,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908185048] [2022-01-18 06:37:57,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908185048] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:57,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233022783] [2022-01-18 06:37:57,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:37:57,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:57,598 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) [2022-01-18 06:37:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 06:37:57,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:37:57,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:57,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:57,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:57,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233022783] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:57,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:57,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 06:37:57,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350735217] [2022-01-18 06:37:57,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:57,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 06:37:57,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 06:37:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 06:37:57,744 INFO L87 Difference]: Start difference. First operand 2121 states and 7026 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:58,137 INFO L93 Difference]: Finished difference Result 4738 states and 14874 transitions. [2022-01-18 06:37:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 06:37:58,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:58,149 INFO L225 Difference]: With dead ends: 4738 [2022-01-18 06:37:58,149 INFO L226 Difference]: Without dead ends: 4738 [2022-01-18 06:37:58,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:37:58,150 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 219 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:58,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 146 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:37:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2022-01-18 06:37:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 2263. [2022-01-18 06:37:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 3.2904509283819627) internal successors, (7443), 2262 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 7443 transitions. [2022-01-18 06:37:58,220 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 7443 transitions. Word has length 27 [2022-01-18 06:37:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:58,220 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 7443 transitions. [2022-01-18 06:37:58,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 7443 transitions. [2022-01-18 06:37:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:58,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:58,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:58,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:58,448 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 [2022-01-18 06:37:58,448 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -342770436, now seen corresponding path program 18 times [2022-01-18 06:37:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462873915] [2022-01-18 06:37:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:58,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:58,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:58,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462873915] [2022-01-18 06:37:58,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462873915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:58,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792595583] [2022-01-18 06:37:58,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:37:58,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:58,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:58,492 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) [2022-01-18 06:37:58,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 06:37:58,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 06:37:58,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:37:58,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:58,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:58,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:58,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792595583] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:58,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:58,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 06:37:58,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112596479] [2022-01-18 06:37:58,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:58,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:37:58,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:58,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:37:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:37:58,661 INFO L87 Difference]: Start difference. First operand 2263 states and 7443 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:59,044 INFO L93 Difference]: Finished difference Result 5029 states and 15712 transitions. [2022-01-18 06:37:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 06:37:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:59,055 INFO L225 Difference]: With dead ends: 5029 [2022-01-18 06:37:59,055 INFO L226 Difference]: Without dead ends: 5029 [2022-01-18 06:37:59,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:37:59,056 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 207 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:59,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 127 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:37:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2022-01-18 06:37:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 2429. [2022-01-18 06:37:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 3.2701812191103787) internal successors, (7940), 2428 states have internal predecessors, (7940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 7940 transitions. [2022-01-18 06:37:59,128 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 7940 transitions. Word has length 27 [2022-01-18 06:37:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:59,128 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 7940 transitions. [2022-01-18 06:37:59,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 7940 transitions. [2022-01-18 06:37:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:59,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:59,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:59,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 06:37:59,350 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 [2022-01-18 06:37:59,350 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:37:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:37:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash -670100712, now seen corresponding path program 19 times [2022-01-18 06:37:59,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:37:59,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13268384] [2022-01-18 06:37:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:37:59,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:37:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:59,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:37:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13268384] [2022-01-18 06:37:59,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13268384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:37:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138836937] [2022-01-18 06:37:59,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:37:59,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:37:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:37:59,398 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) [2022-01-18 06:37:59,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 06:37:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:37:59,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:37:59,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:37:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:37:59,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:37:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:37:59,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138836937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:37:59,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:37:59,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 06:37:59,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282220298] [2022-01-18 06:37:59,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:37:59,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:37:59,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:37:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:37:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:37:59,570 INFO L87 Difference]: Start difference. First operand 2429 states and 7940 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:37:59,830 INFO L93 Difference]: Finished difference Result 3230 states and 10321 transitions. [2022-01-18 06:37:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 06:37:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:37:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:37:59,836 INFO L225 Difference]: With dead ends: 3230 [2022-01-18 06:37:59,836 INFO L226 Difference]: Without dead ends: 3220 [2022-01-18 06:37:59,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:37:59,837 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 187 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:37:59,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 194 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:37:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-01-18 06:37:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2644. [2022-01-18 06:37:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 3.3019296254256525) internal successors, (8727), 2643 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 8727 transitions. [2022-01-18 06:37:59,878 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 8727 transitions. Word has length 27 [2022-01-18 06:37:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:37:59,879 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 8727 transitions. [2022-01-18 06:37:59,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:37:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 8727 transitions. [2022-01-18 06:37:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:37:59,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:37:59,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:37:59,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 06:38:00,099 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 [2022-01-18 06:38:00,099 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1892701376, now seen corresponding path program 20 times [2022-01-18 06:38:00,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:00,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791430337] [2022-01-18 06:38:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:00,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:00,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791430337] [2022-01-18 06:38:00,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791430337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451151232] [2022-01-18 06:38:00,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:38:00,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:00,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:00,135 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) [2022-01-18 06:38:00,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 06:38:00,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:38:00,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:00,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:00,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:00,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:00,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451151232] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:00,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:00,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 06:38:00,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566564729] [2022-01-18 06:38:00,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:00,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:38:00,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:38:00,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:38:00,273 INFO L87 Difference]: Start difference. First operand 2644 states and 8727 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:00,590 INFO L93 Difference]: Finished difference Result 5352 states and 17038 transitions. [2022-01-18 06:38:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 06:38:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:00,599 INFO L225 Difference]: With dead ends: 5352 [2022-01-18 06:38:00,599 INFO L226 Difference]: Without dead ends: 5348 [2022-01-18 06:38:00,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:38:00,600 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 210 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:00,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 120 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:38:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-01-18 06:38:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 2644. [2022-01-18 06:38:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 3.2996594778660615) internal successors, (8721), 2643 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 8721 transitions. [2022-01-18 06:38:00,682 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 8721 transitions. Word has length 27 [2022-01-18 06:38:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:00,683 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 8721 transitions. [2022-01-18 06:38:00,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 8721 transitions. [2022-01-18 06:38:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:00,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:00,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:00,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 06:38:00,910 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 [2022-01-18 06:38:00,911 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -400696644, now seen corresponding path program 21 times [2022-01-18 06:38:00,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:00,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440291107] [2022-01-18 06:38:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:00,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:00,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:00,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440291107] [2022-01-18 06:38:00,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440291107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:00,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008693999] [2022-01-18 06:38:00,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:38:00,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:00,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:00,956 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) [2022-01-18 06:38:00,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 06:38:00,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:38:00,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:00,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:00,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:01,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:01,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008693999] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:01,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:01,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 06:38:01,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043441539] [2022-01-18 06:38:01,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:01,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 06:38:01,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 06:38:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 06:38:01,104 INFO L87 Difference]: Start difference. First operand 2644 states and 8721 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:01,448 INFO L93 Difference]: Finished difference Result 5332 states and 16988 transitions. [2022-01-18 06:38:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 06:38:01,448 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:01,458 INFO L225 Difference]: With dead ends: 5332 [2022-01-18 06:38:01,458 INFO L226 Difference]: Without dead ends: 5316 [2022-01-18 06:38:01,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:38:01,458 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 218 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:01,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 146 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:38:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2022-01-18 06:38:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 2652. [2022-01-18 06:38:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2651 states have (on average 3.29422859298378) internal successors, (8733), 2651 states have internal predecessors, (8733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 8733 transitions. [2022-01-18 06:38:01,514 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 8733 transitions. Word has length 27 [2022-01-18 06:38:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:01,514 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 8733 transitions. [2022-01-18 06:38:01,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 8733 transitions. [2022-01-18 06:38:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:01,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:01,520 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:01,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 06:38:01,727 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 [2022-01-18 06:38:01,727 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1940484412, now seen corresponding path program 22 times [2022-01-18 06:38:01,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:01,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675884326] [2022-01-18 06:38:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:01,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:01,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:01,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675884326] [2022-01-18 06:38:01,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675884326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:01,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314269991] [2022-01-18 06:38:01,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:38:01,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:01,780 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) [2022-01-18 06:38:01,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 06:38:01,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:38:01,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:01,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:01,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:01,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:02,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314269991] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:02,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:02,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:38:02,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401389145] [2022-01-18 06:38:02,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:02,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:38:02,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:38:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:38:02,005 INFO L87 Difference]: Start difference. First operand 2652 states and 8733 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:02,939 INFO L93 Difference]: Finished difference Result 11005 states and 34872 transitions. [2022-01-18 06:38:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 06:38:02,940 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:02,959 INFO L225 Difference]: With dead ends: 11005 [2022-01-18 06:38:02,959 INFO L226 Difference]: Without dead ends: 11005 [2022-01-18 06:38:02,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 06:38:02,960 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 547 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:02,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 212 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2022-01-18 06:38:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 3423. [2022-01-18 06:38:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 3422 states have (on average 3.4585037989479837) internal successors, (11835), 3422 states have internal predecessors, (11835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 11835 transitions. [2022-01-18 06:38:03,084 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 11835 transitions. Word has length 27 [2022-01-18 06:38:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:03,085 INFO L470 AbstractCegarLoop]: Abstraction has 3423 states and 11835 transitions. [2022-01-18 06:38:03,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 11835 transitions. [2022-01-18 06:38:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:03,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:03,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:03,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 06:38:03,291 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 [2022-01-18 06:38:03,291 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1746583744, now seen corresponding path program 23 times [2022-01-18 06:38:03,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:03,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416074506] [2022-01-18 06:38:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:03,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:03,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416074506] [2022-01-18 06:38:03,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416074506] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137877243] [2022-01-18 06:38:03,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:38:03,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:03,346 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) [2022-01-18 06:38:03,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 06:38:03,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:38:03,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:03,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:03,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:03,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:03,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137877243] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:03,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:03,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:38:03,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680345112] [2022-01-18 06:38:03,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:03,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:38:03,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:03,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:38:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:38:03,581 INFO L87 Difference]: Start difference. First operand 3423 states and 11835 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:04,390 INFO L93 Difference]: Finished difference Result 9376 states and 29674 transitions. [2022-01-18 06:38:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:38:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:04,414 INFO L225 Difference]: With dead ends: 9376 [2022-01-18 06:38:04,414 INFO L226 Difference]: Without dead ends: 9376 [2022-01-18 06:38:04,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=860, Invalid=2220, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 06:38:04,415 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 501 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:04,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 212 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9376 states. [2022-01-18 06:38:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9376 to 3420. [2022-01-18 06:38:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3419 states have (on average 3.4574436969874234) internal successors, (11821), 3419 states have internal predecessors, (11821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 11821 transitions. [2022-01-18 06:38:04,579 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 11821 transitions. Word has length 27 [2022-01-18 06:38:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:04,579 INFO L470 AbstractCegarLoop]: Abstraction has 3420 states and 11821 transitions. [2022-01-18 06:38:04,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 11821 transitions. [2022-01-18 06:38:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:04,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:04,585 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:04,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 06:38:04,786 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 [2022-01-18 06:38:04,786 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:04,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1374673978, now seen corresponding path program 24 times [2022-01-18 06:38:04,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057692018] [2022-01-18 06:38:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:04,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:04,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057692018] [2022-01-18 06:38:04,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057692018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59523775] [2022-01-18 06:38:04,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:38:04,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:04,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:04,825 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) [2022-01-18 06:38:04,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 06:38:04,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 06:38:04,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:04,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:04,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:04,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:05,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59523775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:05,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:05,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 06:38:05,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538319351] [2022-01-18 06:38:05,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:05,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 06:38:05,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 06:38:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:38:05,009 INFO L87 Difference]: Start difference. First operand 3420 states and 11821 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:05,762 INFO L93 Difference]: Finished difference Result 10210 states and 32078 transitions. [2022-01-18 06:38:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 06:38:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:05,784 INFO L225 Difference]: With dead ends: 10210 [2022-01-18 06:38:05,784 INFO L226 Difference]: Without dead ends: 10210 [2022-01-18 06:38:05,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:38:05,785 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 374 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:05,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 199 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2022-01-18 06:38:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 3434. [2022-01-18 06:38:05,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 3.459364986891931) internal successors, (11876), 3433 states have internal predecessors, (11876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 11876 transitions. [2022-01-18 06:38:05,950 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 11876 transitions. Word has length 27 [2022-01-18 06:38:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:05,950 INFO L470 AbstractCegarLoop]: Abstraction has 3434 states and 11876 transitions. [2022-01-18 06:38:05,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 11876 transitions. [2022-01-18 06:38:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:05,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:05,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:05,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 06:38:06,175 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 [2022-01-18 06:38:06,175 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1185455680, now seen corresponding path program 25 times [2022-01-18 06:38:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031989089] [2022-01-18 06:38:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:06,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:06,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031989089] [2022-01-18 06:38:06,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031989089] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:06,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310759001] [2022-01-18 06:38:06,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:38:06,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:06,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:06,219 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) [2022-01-18 06:38:06,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 06:38:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:06,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:06,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:06,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:06,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310759001] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:06,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:06,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 06:38:06,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777050410] [2022-01-18 06:38:06,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:06,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 06:38:06,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 06:38:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:38:06,408 INFO L87 Difference]: Start difference. First operand 3434 states and 11876 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:07,116 INFO L93 Difference]: Finished difference Result 9874 states and 31277 transitions. [2022-01-18 06:38:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:38:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:07,136 INFO L225 Difference]: With dead ends: 9874 [2022-01-18 06:38:07,136 INFO L226 Difference]: Without dead ends: 9870 [2022-01-18 06:38:07,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=514, Invalid=1466, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:38:07,137 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 510 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:07,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 161 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states. [2022-01-18 06:38:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 3434. [2022-01-18 06:38:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 3.45819982522575) internal successors, (11872), 3433 states have internal predecessors, (11872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 11872 transitions. [2022-01-18 06:38:07,235 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 11872 transitions. Word has length 27 [2022-01-18 06:38:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:07,235 INFO L470 AbstractCegarLoop]: Abstraction has 3434 states and 11872 transitions. [2022-01-18 06:38:07,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 11872 transitions. [2022-01-18 06:38:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:07,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:07,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:07,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 06:38:07,464 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 [2022-01-18 06:38:07,465 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1719990400, now seen corresponding path program 26 times [2022-01-18 06:38:07,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:07,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975694412] [2022-01-18 06:38:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:07,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:07,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975694412] [2022-01-18 06:38:07,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975694412] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700614624] [2022-01-18 06:38:07,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:38:07,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:07,508 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) [2022-01-18 06:38:07,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 06:38:07,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:38:07,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:07,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:07,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:07,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:07,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700614624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:07,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:07,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:38:07,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595839493] [2022-01-18 06:38:07,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:07,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:38:07,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:38:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:38:07,713 INFO L87 Difference]: Start difference. First operand 3434 states and 11872 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:08,388 INFO L93 Difference]: Finished difference Result 8065 states and 25290 transitions. [2022-01-18 06:38:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:38:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:08,404 INFO L225 Difference]: With dead ends: 8065 [2022-01-18 06:38:08,404 INFO L226 Difference]: Without dead ends: 8065 [2022-01-18 06:38:08,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=640, Invalid=1616, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:38:08,405 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 438 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:08,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 224 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2022-01-18 06:38:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 3440. [2022-01-18 06:38:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3439 states have (on average 3.4594358825239895) internal successors, (11897), 3439 states have internal predecessors, (11897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 11897 transitions. [2022-01-18 06:38:08,514 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 11897 transitions. Word has length 27 [2022-01-18 06:38:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:08,515 INFO L470 AbstractCegarLoop]: Abstraction has 3440 states and 11897 transitions. [2022-01-18 06:38:08,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:08,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 11897 transitions. [2022-01-18 06:38:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:08,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:08,520 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:08,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 06:38:08,721 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 [2022-01-18 06:38:08,721 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 62659070, now seen corresponding path program 27 times [2022-01-18 06:38:08,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:08,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709332805] [2022-01-18 06:38:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:08,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:08,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709332805] [2022-01-18 06:38:08,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709332805] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918728998] [2022-01-18 06:38:08,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:38:08,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:08,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:08,766 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) [2022-01-18 06:38:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 06:38:08,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:38:08,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:08,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:08,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:08,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:38:08,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918728998] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:08,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:08,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 06:38:08,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430078665] [2022-01-18 06:38:08,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:08,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:38:08,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:38:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:38:08,994 INFO L87 Difference]: Start difference. First operand 3440 states and 11897 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:09,850 INFO L93 Difference]: Finished difference Result 7992 states and 25480 transitions. [2022-01-18 06:38:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:38:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:09,866 INFO L225 Difference]: With dead ends: 7992 [2022-01-18 06:38:09,866 INFO L226 Difference]: Without dead ends: 7988 [2022-01-18 06:38:09,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=800, Invalid=2392, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 06:38:09,867 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 504 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:09,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 185 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7988 states. [2022-01-18 06:38:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7988 to 3434. [2022-01-18 06:38:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 3.45819982522575) internal successors, (11872), 3433 states have internal predecessors, (11872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 11872 transitions. [2022-01-18 06:38:09,959 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 11872 transitions. Word has length 27 [2022-01-18 06:38:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:09,960 INFO L470 AbstractCegarLoop]: Abstraction has 3434 states and 11872 transitions. [2022-01-18 06:38:09,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 11872 transitions. [2022-01-18 06:38:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:09,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:09,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:09,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 06:38:10,172 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 [2022-01-18 06:38:10,173 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1105927550, now seen corresponding path program 28 times [2022-01-18 06:38:10,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:10,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919636047] [2022-01-18 06:38:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:10,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:10,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919636047] [2022-01-18 06:38:10,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919636047] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314669819] [2022-01-18 06:38:10,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:38:10,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:10,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:10,216 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) [2022-01-18 06:38:10,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 06:38:10,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:38:10,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:10,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:10,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:10,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:10,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314669819] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:10,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:10,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:38:10,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185228308] [2022-01-18 06:38:10,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:10,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:38:10,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:38:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:38:10,384 INFO L87 Difference]: Start difference. First operand 3434 states and 11872 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:11,102 INFO L93 Difference]: Finished difference Result 8817 states and 28422 transitions. [2022-01-18 06:38:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:38:11,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:11,119 INFO L225 Difference]: With dead ends: 8817 [2022-01-18 06:38:11,119 INFO L226 Difference]: Without dead ends: 8817 [2022-01-18 06:38:11,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=2271, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 06:38:11,120 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 321 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:11,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 167 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2022-01-18 06:38:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 3737. [2022-01-18 06:38:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 3.4494111349036403) internal successors, (12887), 3736 states have internal predecessors, (12887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 12887 transitions. [2022-01-18 06:38:11,222 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 12887 transitions. Word has length 27 [2022-01-18 06:38:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:11,222 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 12887 transitions. [2022-01-18 06:38:11,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 12887 transitions. [2022-01-18 06:38:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:11,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:11,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:11,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 06:38:11,430 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 [2022-01-18 06:38:11,430 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:11,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:11,430 INFO L85 PathProgramCache]: Analyzing trace with hash 916709252, now seen corresponding path program 29 times [2022-01-18 06:38:11,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:11,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050249158] [2022-01-18 06:38:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:11,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:11,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050249158] [2022-01-18 06:38:11,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050249158] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598740171] [2022-01-18 06:38:11,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:38:11,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:11,466 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) [2022-01-18 06:38:11,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 06:38:11,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:38:11,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:11,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:11,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:11,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:11,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598740171] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:11,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:11,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:38:11,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257772011] [2022-01-18 06:38:11,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:11,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:38:11,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:38:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:38:11,626 INFO L87 Difference]: Start difference. First operand 3737 states and 12887 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:12,182 INFO L93 Difference]: Finished difference Result 8396 states and 27364 transitions. [2022-01-18 06:38:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:38:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:12,199 INFO L225 Difference]: With dead ends: 8396 [2022-01-18 06:38:12,199 INFO L226 Difference]: Without dead ends: 8388 [2022-01-18 06:38:12,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1435, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:38:12,200 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 362 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:12,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 141 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8388 states. [2022-01-18 06:38:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8388 to 3725. [2022-01-18 06:38:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 3724 states have (on average 3.44656283566058) internal successors, (12835), 3724 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 12835 transitions. [2022-01-18 06:38:12,312 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 12835 transitions. Word has length 27 [2022-01-18 06:38:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:12,312 INFO L470 AbstractCegarLoop]: Abstraction has 3725 states and 12835 transitions. [2022-01-18 06:38:12,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 12835 transitions. [2022-01-18 06:38:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:12,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:12,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:12,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 06:38:12,535 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 [2022-01-18 06:38:12,535 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:12,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1560091512, now seen corresponding path program 30 times [2022-01-18 06:38:12,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:12,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546255726] [2022-01-18 06:38:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:12,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:12,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:12,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546255726] [2022-01-18 06:38:12,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546255726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:12,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021911606] [2022-01-18 06:38:12,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:38:12,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:12,574 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) [2022-01-18 06:38:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 06:38:12,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:38:12,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:12,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:12,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021911606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:12,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:12,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 06:38:12,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623018477] [2022-01-18 06:38:12,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:12,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 06:38:12,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 06:38:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 06:38:12,737 INFO L87 Difference]: Start difference. First operand 3725 states and 12835 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:13,337 INFO L93 Difference]: Finished difference Result 9052 states and 28913 transitions. [2022-01-18 06:38:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 06:38:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:13,354 INFO L225 Difference]: With dead ends: 9052 [2022-01-18 06:38:13,354 INFO L226 Difference]: Without dead ends: 9036 [2022-01-18 06:38:13,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=486, Invalid=1676, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:38:13,355 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 339 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:13,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 181 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2022-01-18 06:38:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 3753. [2022-01-18 06:38:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 3.446961620469083) internal successors, (12933), 3752 states have internal predecessors, (12933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 12933 transitions. [2022-01-18 06:38:13,443 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 12933 transitions. Word has length 27 [2022-01-18 06:38:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:13,443 INFO L470 AbstractCegarLoop]: Abstraction has 3753 states and 12933 transitions. [2022-01-18 06:38:13,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 12933 transitions. [2022-01-18 06:38:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:13,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:13,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:13,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 06:38:13,650 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 [2022-01-18 06:38:13,650 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1872447484, now seen corresponding path program 31 times [2022-01-18 06:38:13,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235408944] [2022-01-18 06:38:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:13,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:13,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235408944] [2022-01-18 06:38:13,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235408944] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483548202] [2022-01-18 06:38:13,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:38:13,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:13,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:13,698 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) [2022-01-18 06:38:13,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 06:38:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:13,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:13,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:13,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:13,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483548202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:13,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:13,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 06:38:13,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478613423] [2022-01-18 06:38:13,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:13,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:38:13,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:38:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:38:13,942 INFO L87 Difference]: Start difference. First operand 3753 states and 12933 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:14,663 INFO L93 Difference]: Finished difference Result 7240 states and 23141 transitions. [2022-01-18 06:38:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 06:38:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:14,678 INFO L225 Difference]: With dead ends: 7240 [2022-01-18 06:38:14,678 INFO L226 Difference]: Without dead ends: 7240 [2022-01-18 06:38:14,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=678, Invalid=1772, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:38:14,679 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 470 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:14,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 268 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-01-18 06:38:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 3938. [2022-01-18 06:38:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3937 states have (on average 3.4384048768097535) internal successors, (13537), 3937 states have internal predecessors, (13537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 13537 transitions. [2022-01-18 06:38:14,782 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 13537 transitions. Word has length 27 [2022-01-18 06:38:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:14,783 INFO L470 AbstractCegarLoop]: Abstraction has 3938 states and 13537 transitions. [2022-01-18 06:38:14,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 13537 transitions. [2022-01-18 06:38:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:14,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:14,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:14,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 06:38:14,990 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 [2022-01-18 06:38:14,990 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash -639870342, now seen corresponding path program 32 times [2022-01-18 06:38:14,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:14,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568140131] [2022-01-18 06:38:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:14,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:15,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568140131] [2022-01-18 06:38:15,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568140131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904010398] [2022-01-18 06:38:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:38:15,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:15,039 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) [2022-01-18 06:38:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 06:38:15,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:38:15,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:15,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:15,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:15,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:15,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904010398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:15,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:15,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 06:38:15,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170235214] [2022-01-18 06:38:15,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:15,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:38:15,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:38:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:38:15,247 INFO L87 Difference]: Start difference. First operand 3938 states and 13537 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:16,159 INFO L93 Difference]: Finished difference Result 7155 states and 23290 transitions. [2022-01-18 06:38:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:38:16,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:16,173 INFO L225 Difference]: With dead ends: 7155 [2022-01-18 06:38:16,173 INFO L226 Difference]: Without dead ends: 7151 [2022-01-18 06:38:16,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 06:38:16,174 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 454 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:16,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 228 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:38:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2022-01-18 06:38:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 3936. [2022-01-18 06:38:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 3935 states have (on average 3.4373570520965693) internal successors, (13526), 3935 states have internal predecessors, (13526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 13526 transitions. [2022-01-18 06:38:16,287 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 13526 transitions. Word has length 27 [2022-01-18 06:38:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:16,287 INFO L470 AbstractCegarLoop]: Abstraction has 3936 states and 13526 transitions. [2022-01-18 06:38:16,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 13526 transitions. [2022-01-18 06:38:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:38:16,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:16,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:38:16,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 06:38:16,493 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 [2022-01-18 06:38:16,493 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1484841794, now seen corresponding path program 33 times [2022-01-18 06:38:16,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179020406] [2022-01-18 06:38:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:16,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:16,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:16,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179020406] [2022-01-18 06:38:16,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179020406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:16,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379312426] [2022-01-18 06:38:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:38:16,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:16,533 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) [2022-01-18 06:38:16,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 06:38:16,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:38:16,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:16,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 06:38:16,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:16,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:16,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379312426] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:16,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:16,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:38:16,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854607867] [2022-01-18 06:38:16,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:16,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:38:16,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:16,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:38:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:38:16,710 INFO L87 Difference]: Start difference. First operand 3936 states and 13526 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:17,380 INFO L93 Difference]: Finished difference Result 6859 states and 22528 transitions. [2022-01-18 06:38:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:38:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:38:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:17,392 INFO L225 Difference]: With dead ends: 6859 [2022-01-18 06:38:17,393 INFO L226 Difference]: Without dead ends: 6843 [2022-01-18 06:38:17,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:38:17,393 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 357 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:17,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 178 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:38:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6843 states. [2022-01-18 06:38:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6843 to 3932. [2022-01-18 06:38:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 3931 states have (on average 3.435766980412109) internal successors, (13506), 3931 states have internal predecessors, (13506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 13506 transitions. [2022-01-18 06:38:17,472 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 13506 transitions. Word has length 27 [2022-01-18 06:38:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:17,472 INFO L470 AbstractCegarLoop]: Abstraction has 3932 states and 13506 transitions. [2022-01-18 06:38:17,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 13506 transitions. [2022-01-18 06:38:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:17,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:17,478 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:38:17,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 06:38:17,679 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 [2022-01-18 06:38:17,679 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -351559020, now seen corresponding path program 4 times [2022-01-18 06:38:17,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:17,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637665022] [2022-01-18 06:38:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:17,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:18,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:18,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637665022] [2022-01-18 06:38:18,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637665022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:18,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857082280] [2022-01-18 06:38:18,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:38:18,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:18,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:18,044 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) [2022-01-18 06:38:18,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 06:38:18,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:38:18,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:18,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:38:18,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:18,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:18,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:18,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:38:18,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:18,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:38:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:18,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:18,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:18,781 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:18,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:38:18,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:18,810 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:18,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:38:19,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:19,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:19,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:19,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:38:19,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:19,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:19,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:19,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:38:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:19,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857082280] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:19,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:19,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 32 [2022-01-18 06:38:19,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287239541] [2022-01-18 06:38:19,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:19,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:38:19,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:38:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:38:19,438 INFO L87 Difference]: Start difference. First operand 3932 states and 13506 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:38:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:23,675 INFO L93 Difference]: Finished difference Result 8329 states and 25902 transitions. [2022-01-18 06:38:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 06:38:23,675 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:38:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:23,690 INFO L225 Difference]: With dead ends: 8329 [2022-01-18 06:38:23,690 INFO L226 Difference]: Without dead ends: 8299 [2022-01-18 06:38:23,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1360, Invalid=6296, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 06:38:23,691 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 732 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:23,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 409 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 06:38:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2022-01-18 06:38:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 4021. [2022-01-18 06:38:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 4020 states have (on average 3.435820895522388) internal successors, (13812), 4020 states have internal predecessors, (13812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 13812 transitions. [2022-01-18 06:38:23,770 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 13812 transitions. Word has length 30 [2022-01-18 06:38:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:23,770 INFO L470 AbstractCegarLoop]: Abstraction has 4021 states and 13812 transitions. [2022-01-18 06:38:23,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:38:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 13812 transitions. [2022-01-18 06:38:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:23,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:23,776 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:38:23,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 06:38:23,976 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 [2022-01-18 06:38:23,976 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1818932088, now seen corresponding path program 5 times [2022-01-18 06:38:23,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:23,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633859908] [2022-01-18 06:38:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:23,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:24,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633859908] [2022-01-18 06:38:24,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633859908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098705254] [2022-01-18 06:38:24,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:38:24,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:24,339 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) [2022-01-18 06:38:24,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 06:38:24,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:38:24,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:24,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:38:24,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:24,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:24,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-01-18 06:38:24,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:24,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-18 06:38:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:24,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:25,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,231 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:25,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:38:25,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,258 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:25,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:38:25,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,543 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:25,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:38:25,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:25,564 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:25,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:38:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098705254] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:25,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:25,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-01-18 06:38:25,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210600843] [2022-01-18 06:38:25,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:25,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:38:25,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:38:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:38:25,825 INFO L87 Difference]: Start difference. First operand 4021 states and 13812 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:38:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:31,428 INFO L93 Difference]: Finished difference Result 8680 states and 26713 transitions. [2022-01-18 06:38:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 06:38:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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 30 [2022-01-18 06:38:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:31,444 INFO L225 Difference]: With dead ends: 8680 [2022-01-18 06:38:31,444 INFO L226 Difference]: Without dead ends: 8635 [2022-01-18 06:38:31,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3605 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1623, Invalid=9297, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 06:38:31,445 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 642 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:31,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 610 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2786 Invalid, 0 Unknown, 36 Unchecked, 1.4s Time] [2022-01-18 06:38:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8635 states. [2022-01-18 06:38:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8635 to 4035. [2022-01-18 06:38:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 4034 states have (on average 3.4338125929598413) internal successors, (13852), 4034 states have internal predecessors, (13852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 13852 transitions. [2022-01-18 06:38:31,568 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 13852 transitions. Word has length 30 [2022-01-18 06:38:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:31,568 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 13852 transitions. [2022-01-18 06:38:31,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:38:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 13852 transitions. [2022-01-18 06:38:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:31,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:31,574 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:38:31,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 06:38:31,774 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 [2022-01-18 06:38:31,774 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 924875788, now seen corresponding path program 6 times [2022-01-18 06:38:31,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:31,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159541216] [2022-01-18 06:38:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:31,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:32,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159541216] [2022-01-18 06:38:32,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159541216] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753737909] [2022-01-18 06:38:32,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:38:32,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:32,091 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) [2022-01-18 06:38:32,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 06:38:32,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:38:32,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:32,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:38:32,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:32,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:32,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-01-18 06:38:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:32,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:32,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:32,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 26 [2022-01-18 06:38:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:32,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:33,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:33,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:33,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:33,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 77 [2022-01-18 06:38:33,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:33,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:33,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:33,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 61 [2022-01-18 06:38:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:33,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753737909] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:33,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:33,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 35 [2022-01-18 06:38:33,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105164007] [2022-01-18 06:38:33,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:33,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:38:33,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:38:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:38:33,432 INFO L87 Difference]: Start difference. First operand 4035 states and 13852 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2022-01-18 06:38:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:42,590 INFO L93 Difference]: Finished difference Result 11498 states and 38537 transitions. [2022-01-18 06:38:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 06:38:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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 30 [2022-01-18 06:38:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:42,612 INFO L225 Difference]: With dead ends: 11498 [2022-01-18 06:38:42,612 INFO L226 Difference]: Without dead ends: 11484 [2022-01-18 06:38:42,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12006 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2573, Invalid=29289, Unknown=0, NotChecked=0, Total=31862 [2022-01-18 06:38:42,614 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 522 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1697 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:42,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 989 Invalid, 4633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2784 Invalid, 0 Unknown, 1697 Unchecked, 1.4s Time] [2022-01-18 06:38:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11484 states. [2022-01-18 06:38:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 4122. [2022-01-18 06:38:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 3.433875272991992) internal successors, (14151), 4121 states have internal predecessors, (14151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 14151 transitions. [2022-01-18 06:38:42,724 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 14151 transitions. Word has length 30 [2022-01-18 06:38:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:42,724 INFO L470 AbstractCegarLoop]: Abstraction has 4122 states and 14151 transitions. [2022-01-18 06:38:42,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 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) [2022-01-18 06:38:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 14151 transitions. [2022-01-18 06:38:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:42,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:42,730 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:38:42,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 06:38:42,930 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 [2022-01-18 06:38:42,930 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash -575152710, now seen corresponding path program 7 times [2022-01-18 06:38:42,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:42,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438051191] [2022-01-18 06:38:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:42,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:43,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438051191] [2022-01-18 06:38:43,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438051191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743023691] [2022-01-18 06:38:43,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:38:43,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:43,249 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) [2022-01-18 06:38:43,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 06:38:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:43,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:38:43,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:43,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:43,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:43,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-01-18 06:38:43,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:43,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:43,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 06:38:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:43,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:43,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:43,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:43,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:38:43,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:43,946 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:43,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:38:44,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:44,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:44,367 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:44,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:38:44,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:44,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:44,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:44,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:38:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:44,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743023691] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:44,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:44,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 32 [2022-01-18 06:38:44,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700362266] [2022-01-18 06:38:44,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:44,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:38:44,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:38:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:38:44,605 INFO L87 Difference]: Start difference. First operand 4122 states and 14151 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:38:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:48,590 INFO L93 Difference]: Finished difference Result 8424 states and 26234 transitions. [2022-01-18 06:38:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 06:38:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:38:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:48,606 INFO L225 Difference]: With dead ends: 8424 [2022-01-18 06:38:48,606 INFO L226 Difference]: Without dead ends: 8394 [2022-01-18 06:38:48,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1367, Invalid=6115, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 06:38:48,607 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 687 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:48,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 454 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2161 Invalid, 0 Unknown, 198 Unchecked, 1.1s Time] [2022-01-18 06:38:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2022-01-18 06:38:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 4114. [2022-01-18 06:38:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 4113 states have (on average 3.4354485776805253) internal successors, (14130), 4113 states have internal predecessors, (14130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 14130 transitions. [2022-01-18 06:38:48,693 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 14130 transitions. Word has length 30 [2022-01-18 06:38:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:48,693 INFO L470 AbstractCegarLoop]: Abstraction has 4114 states and 14130 transitions. [2022-01-18 06:38:48,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:38:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 14130 transitions. [2022-01-18 06:38:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:48,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:48,700 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:38:48,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 06:38:48,900 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 [2022-01-18 06:38:48,900 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:48,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2126312130, now seen corresponding path program 8 times [2022-01-18 06:38:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789730252] [2022-01-18 06:38:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:48,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:49,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789730252] [2022-01-18 06:38:49,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789730252] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440917682] [2022-01-18 06:38:49,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:38:49,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:49,205 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) [2022-01-18 06:38:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 06:38:49,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:38:49,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:49,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:38:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:49,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:49,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:49,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:38:49,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:49,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:38:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:49,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:49,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:49,888 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:49,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:38:49,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:49,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:49,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:38:50,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:50,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:50,283 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:50,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:38:50,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:50,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:50,303 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:50,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:38:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:50,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440917682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:50,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:50,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:38:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220063845] [2022-01-18 06:38:50,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:50,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:38:50,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:38:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:38:50,566 INFO L87 Difference]: Start difference. First operand 4114 states and 14130 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:38:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:38:54,318 INFO L93 Difference]: Finished difference Result 8384 states and 26123 transitions. [2022-01-18 06:38:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:38:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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 30 [2022-01-18 06:38:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:38:54,332 INFO L225 Difference]: With dead ends: 8384 [2022-01-18 06:38:54,333 INFO L226 Difference]: Without dead ends: 8369 [2022-01-18 06:38:54,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1326, Invalid=5646, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:38:54,333 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 787 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:38:54,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 345 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1601 Invalid, 0 Unknown, 183 Unchecked, 0.9s Time] [2022-01-18 06:38:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2022-01-18 06:38:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 4108. [2022-01-18 06:38:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 3.436571706841977) internal successors, (14114), 4107 states have internal predecessors, (14114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:38:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 14114 transitions. [2022-01-18 06:38:54,414 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 14114 transitions. Word has length 30 [2022-01-18 06:38:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:38:54,414 INFO L470 AbstractCegarLoop]: Abstraction has 4108 states and 14114 transitions. [2022-01-18 06:38:54,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:38:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 14114 transitions. [2022-01-18 06:38:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:38:54,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:38:54,421 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] [2022-01-18 06:38:54,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 06:38:54,622 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 [2022-01-18 06:38:54,622 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:38:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:38:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 568392223, now seen corresponding path program 34 times [2022-01-18 06:38:54,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:38:54,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954019584] [2022-01-18 06:38:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:38:54,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:38:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:38:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:55,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:38:55,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954019584] [2022-01-18 06:38:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954019584] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:38:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54325630] [2022-01-18 06:38:55,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:38:55,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:38:55,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:38:55,024 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) [2022-01-18 06:38:55,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 06:38:55,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:38:55,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:38:55,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:38:55,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:38:55,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:55,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-01-18 06:38:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:55,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2022-01-18 06:38:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:55,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:38:55,708 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:38:55,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:38:55,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,725 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:38:55,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:38:55,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:55,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:38:55,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:38:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:38:55,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:38:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:38:55,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54325630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:38:55,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:38:55,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 06:38:55,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036584142] [2022-01-18 06:38:55,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:38:55,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:38:55,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:38:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:38:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:38:55,954 INFO L87 Difference]: Start difference. First operand 4108 states and 14114 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:39:03,581 INFO L93 Difference]: Finished difference Result 7526 states and 24784 transitions. [2022-01-18 06:39:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 06:39:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:39:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:39:03,594 INFO L225 Difference]: With dead ends: 7526 [2022-01-18 06:39:03,595 INFO L226 Difference]: Without dead ends: 7479 [2022-01-18 06:39:03,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5574 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2059, Invalid=14197, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 06:39:03,595 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 495 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:39:03,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 483 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 06:39:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2022-01-18 06:39:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 4187. [2022-01-18 06:39:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4187 states, 4186 states have (on average 3.4257047300525563) internal successors, (14340), 4186 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 14340 transitions. [2022-01-18 06:39:03,678 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 14340 transitions. Word has length 30 [2022-01-18 06:39:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:39:03,678 INFO L470 AbstractCegarLoop]: Abstraction has 4187 states and 14340 transitions. [2022-01-18 06:39:03,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 14340 transitions. [2022-01-18 06:39:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:39:03,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:39:03,685 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:39:03,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 06:39:03,902 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 [2022-01-18 06:39:03,902 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:39:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:39:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 757290426, now seen corresponding path program 9 times [2022-01-18 06:39:03,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:39:03,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784674914] [2022-01-18 06:39:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:39:03,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:39:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:39:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:04,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:39:04,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784674914] [2022-01-18 06:39:04,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784674914] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:39:04,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182826737] [2022-01-18 06:39:04,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:39:04,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:39:04,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:39:04,228 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) [2022-01-18 06:39:04,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 06:39:04,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:39:04,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:39:04,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:39:04,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:39:04,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:04,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:04,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-01-18 06:39:04,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:04,624 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:39:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:04,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:39:04,986 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:04,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 93 [2022-01-18 06:39:05,014 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:05,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-01-18 06:39:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:06,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182826737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:39:06,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:39:06,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:39:06,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869525814] [2022-01-18 06:39:06,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:39:06,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:39:06,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:39:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:39:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:39:06,194 INFO L87 Difference]: Start difference. First operand 4187 states and 14340 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:39:10,447 INFO L93 Difference]: Finished difference Result 8543 states and 26702 transitions. [2022-01-18 06:39:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 06:39:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:39:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:39:10,462 INFO L225 Difference]: With dead ends: 8543 [2022-01-18 06:39:10,462 INFO L226 Difference]: Without dead ends: 8529 [2022-01-18 06:39:10,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 41 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3020 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1404, Invalid=5736, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 06:39:10,463 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 615 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:39:10,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 439 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1197 Invalid, 0 Unknown, 555 Unchecked, 0.7s Time] [2022-01-18 06:39:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8529 states. [2022-01-18 06:39:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8529 to 4221. [2022-01-18 06:39:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 4220 states have (on average 3.427962085308057) internal successors, (14466), 4220 states have internal predecessors, (14466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 14466 transitions. [2022-01-18 06:39:10,546 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 14466 transitions. Word has length 30 [2022-01-18 06:39:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:39:10,547 INFO L470 AbstractCegarLoop]: Abstraction has 4221 states and 14466 transitions. [2022-01-18 06:39:10,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 14466 transitions. [2022-01-18 06:39:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:39:10,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:39:10,553 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] [2022-01-18 06:39:10,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 06:39:10,753 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 [2022-01-18 06:39:10,753 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:39:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:39:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1555957713, now seen corresponding path program 35 times [2022-01-18 06:39:10,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:39:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261419084] [2022-01-18 06:39:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:39:10,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:39:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:39:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:11,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:39:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261419084] [2022-01-18 06:39:11,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261419084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:39:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487788788] [2022-01-18 06:39:11,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:39:11,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:39:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:39:11,156 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) [2022-01-18 06:39:11,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 06:39:11,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:39:11,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:39:11,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:39:11,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:39:11,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:11,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-01-18 06:39:11,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:11,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2022-01-18 06:39:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:11,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:39:11,880 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:39:11,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:39:11,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,898 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:11,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:39:11,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:11,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:39:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:12,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:39:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:12,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487788788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:39:12,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:39:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-01-18 06:39:12,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069777692] [2022-01-18 06:39:12,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:39:12,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:39:12,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:39:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:39:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:39:12,076 INFO L87 Difference]: Start difference. First operand 4221 states and 14466 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 06:39:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:39:28,733 INFO L93 Difference]: Finished difference Result 9601 states and 31192 transitions. [2022-01-18 06:39:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-18 06:39:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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 30 [2022-01-18 06:39:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:39:28,754 INFO L225 Difference]: With dead ends: 9601 [2022-01-18 06:39:28,754 INFO L226 Difference]: Without dead ends: 9554 [2022-01-18 06:39:28,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15147 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=5253, Invalid=32577, Unknown=0, NotChecked=0, Total=37830 [2022-01-18 06:39:28,756 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 839 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 5020 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 5687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 5020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:39:28,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 959 Invalid, 5687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 5020 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 06:39:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2022-01-18 06:39:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 4250. [2022-01-18 06:39:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4249 states have (on average 3.4304542245234173) internal successors, (14576), 4249 states have internal predecessors, (14576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:39:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 14576 transitions. [2022-01-18 06:39:28,905 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 14576 transitions. Word has length 30 [2022-01-18 06:39:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:39:28,906 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 14576 transitions. [2022-01-18 06:39:28,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 06:39:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 14576 transitions. [2022-01-18 06:39:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:39:28,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:39:28,913 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] [2022-01-18 06:39:28,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 06:39:29,127 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 [2022-01-18 06:39:29,127 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:39:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:39:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1067437025, now seen corresponding path program 36 times [2022-01-18 06:39:29,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:39:29,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349116944] [2022-01-18 06:39:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:39:29,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:39:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:39:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:29,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:39:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349116944] [2022-01-18 06:39:29,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349116944] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:39:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863892692] [2022-01-18 06:39:29,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:39:29,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:39:29,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:39:29,534 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) [2022-01-18 06:39:29,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 06:39:29,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:39:29,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:39:29,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:39:29,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:39:29,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:29,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2022-01-18 06:39:29,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:29,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:29,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 113 [2022-01-18 06:39:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:30,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:39:30,320 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:39:30,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:39:30,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,337 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:39:30,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:39:30,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:30,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:39:30,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:39:30,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:39:30,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:39:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:39:30,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863892692] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:39:30,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:39:30,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 32 [2022-01-18 06:39:30,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611190004] [2022-01-18 06:39:30,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:39:30,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:39:30,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:39:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:39:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:39:30,532 INFO L87 Difference]: Start difference. First operand 4250 states and 14576 transitions. Second operand has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:16,651 INFO L93 Difference]: Finished difference Result 16610 states and 52058 transitions. [2022-01-18 06:40:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 507 states. [2022-01-18 06:40:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:40:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:16,685 INFO L225 Difference]: With dead ends: 16610 [2022-01-18 06:40:16,685 INFO L226 Difference]: Without dead ends: 16541 [2022-01-18 06:40:16,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128956 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=22921, Invalid=257449, Unknown=0, NotChecked=0, Total=280370 [2022-01-18 06:40:16,694 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 1751 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 9768 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 10903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 9768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:16,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 2177 Invalid, 10903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 9768 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-18 06:40:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16541 states. [2022-01-18 06:40:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16541 to 4659. [2022-01-18 06:40:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 4658 states have (on average 3.4257191927866035) internal successors, (15957), 4658 states have internal predecessors, (15957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 15957 transitions. [2022-01-18 06:40:16,837 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 15957 transitions. Word has length 30 [2022-01-18 06:40:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:16,837 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 15957 transitions. [2022-01-18 06:40:16,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 15957 transitions. [2022-01-18 06:40:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:16,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:16,844 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:16,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 06:40:17,044 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 [2022-01-18 06:40:17,044 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 602852908, now seen corresponding path program 10 times [2022-01-18 06:40:17,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:17,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222450492] [2022-01-18 06:40:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:17,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222450492] [2022-01-18 06:40:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222450492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344868231] [2022-01-18 06:40:17,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:40:17,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:17,416 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) [2022-01-18 06:40:17,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 06:40:17,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:40:17,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:17,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:40:17,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:17,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:17,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:17,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-01-18 06:40:17,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:17,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:17,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-01-18 06:40:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:17,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:18,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:18,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:40:18,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,171 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:18,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:40:18,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:18,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:18,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:18,527 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:18,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:18,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344868231] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:18,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:18,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 32 [2022-01-18 06:40:18,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189116748] [2022-01-18 06:40:18,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:18,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:40:18,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:40:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:40:18,764 INFO L87 Difference]: Start difference. First operand 4659 states and 15957 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:40:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:23,968 INFO L93 Difference]: Finished difference Result 9848 states and 30439 transitions. [2022-01-18 06:40:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 06:40:23,968 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:40:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:23,986 INFO L225 Difference]: With dead ends: 9848 [2022-01-18 06:40:23,986 INFO L226 Difference]: Without dead ends: 9818 [2022-01-18 06:40:23,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3791 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1927, Invalid=8579, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 06:40:23,988 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 872 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:23,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 426 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2106 Invalid, 0 Unknown, 91 Unchecked, 1.1s Time] [2022-01-18 06:40:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2022-01-18 06:40:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 4649. [2022-01-18 06:40:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4648 states have (on average 3.4242685025817554) internal successors, (15916), 4648 states have internal predecessors, (15916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 15916 transitions. [2022-01-18 06:40:24,094 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 15916 transitions. Word has length 30 [2022-01-18 06:40:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:24,094 INFO L470 AbstractCegarLoop]: Abstraction has 4649 states and 15916 transitions. [2022-01-18 06:40:24,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:40:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 15916 transitions. [2022-01-18 06:40:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:24,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:24,101 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:24,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 06:40:24,301 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 [2022-01-18 06:40:24,301 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash -92028696, now seen corresponding path program 11 times [2022-01-18 06:40:24,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:24,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726009579] [2022-01-18 06:40:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:24,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:24,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:24,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726009579] [2022-01-18 06:40:24,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726009579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61994713] [2022-01-18 06:40:24,655 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:40:24,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:24,656 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) [2022-01-18 06:40:24,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 06:40:24,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:40:24,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:24,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:40:24,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:24,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:24,976 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:24,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2022-01-18 06:40:24,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:40:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:25,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:25,397 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:40:25,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:40:25,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:25,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:25,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:40:25,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:25,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:25,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:25,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:25,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:25,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:25,759 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:25,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:25,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61994713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:25,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:25,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-01-18 06:40:25,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807520669] [2022-01-18 06:40:25,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:25,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:40:25,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:40:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:40:25,968 INFO L87 Difference]: Start difference. First operand 4649 states and 15916 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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) [2022-01-18 06:40:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:33,227 INFO L93 Difference]: Finished difference Result 9928 states and 31296 transitions. [2022-01-18 06:40:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 06:40:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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 30 [2022-01-18 06:40:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:33,244 INFO L225 Difference]: With dead ends: 9928 [2022-01-18 06:40:33,244 INFO L226 Difference]: Without dead ends: 9869 [2022-01-18 06:40:33,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4529 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1655, Invalid=11917, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 06:40:33,245 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 721 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:33,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 697 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2964 Invalid, 0 Unknown, 653 Unchecked, 1.6s Time] [2022-01-18 06:40:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9869 states. [2022-01-18 06:40:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9869 to 4696. [2022-01-18 06:40:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 4695 states have (on average 3.428541001064963) internal successors, (16097), 4695 states have internal predecessors, (16097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 16097 transitions. [2022-01-18 06:40:33,345 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 16097 transitions. Word has length 30 [2022-01-18 06:40:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:33,345 INFO L470 AbstractCegarLoop]: Abstraction has 4696 states and 16097 transitions. [2022-01-18 06:40:33,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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) [2022-01-18 06:40:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 16097 transitions. [2022-01-18 06:40:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:33,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:33,351 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:33,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 06:40:33,551 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 [2022-01-18 06:40:33,552 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash 112845316, now seen corresponding path program 12 times [2022-01-18 06:40:33,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:33,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403568302] [2022-01-18 06:40:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:33,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:33,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:33,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403568302] [2022-01-18 06:40:33,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403568302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:33,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466131165] [2022-01-18 06:40:33,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:40:33,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:33,861 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) [2022-01-18 06:40:33,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 06:40:33,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:40:33,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:33,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:40:33,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:34,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:34,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-01-18 06:40:34,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:40:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:34,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:34,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,535 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:34,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:40:34,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,558 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:34,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:40:34,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,892 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:34,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:34,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:34,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:34,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:35,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466131165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:35,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:35,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 06:40:35,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125509086] [2022-01-18 06:40:35,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:35,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:40:35,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:40:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:40:35,153 INFO L87 Difference]: Start difference. First operand 4696 states and 16097 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 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) [2022-01-18 06:40:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:39,631 INFO L93 Difference]: Finished difference Result 8928 states and 28034 transitions. [2022-01-18 06:40:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 06:40:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 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 30 [2022-01-18 06:40:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:39,648 INFO L225 Difference]: With dead ends: 8928 [2022-01-18 06:40:39,648 INFO L226 Difference]: Without dead ends: 8898 [2022-01-18 06:40:39,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1511, Invalid=7231, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 06:40:39,650 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 580 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:39,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 407 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 06:40:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-01-18 06:40:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4722. [2022-01-18 06:40:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 4721 states have (on average 3.4257572548188944) internal successors, (16173), 4721 states have internal predecessors, (16173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 16173 transitions. [2022-01-18 06:40:39,776 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 16173 transitions. Word has length 30 [2022-01-18 06:40:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:39,776 INFO L470 AbstractCegarLoop]: Abstraction has 4722 states and 16173 transitions. [2022-01-18 06:40:39,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 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) [2022-01-18 06:40:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 16173 transitions. [2022-01-18 06:40:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:39,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:39,783 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:39,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 06:40:39,983 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 [2022-01-18 06:40:39,984 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1513260232, now seen corresponding path program 13 times [2022-01-18 06:40:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:39,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514217300] [2022-01-18 06:40:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:39,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:40,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514217300] [2022-01-18 06:40:40,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514217300] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120026438] [2022-01-18 06:40:40,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:40:40,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:40,344 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) [2022-01-18 06:40:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:40,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 06:40:40,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:40:40,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:40,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:40,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:40,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-01-18 06:40:40,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:40,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:40,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 06:40:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:40,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:41,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,123 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:41,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:40:41,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,144 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:41,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:40:41,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,472 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:41,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:41,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:41,490 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:41,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:41,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120026438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:41,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:41,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 32 [2022-01-18 06:40:41,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753044026] [2022-01-18 06:40:41,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:41,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:40:41,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:40:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:40:41,716 INFO L87 Difference]: Start difference. First operand 4722 states and 16173 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:40:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:45,906 INFO L93 Difference]: Finished difference Result 8815 states and 27750 transitions. [2022-01-18 06:40:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 06:40:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:40:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:45,923 INFO L225 Difference]: With dead ends: 8815 [2022-01-18 06:40:45,923 INFO L226 Difference]: Without dead ends: 8785 [2022-01-18 06:40:45,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3089 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1538, Invalid=7204, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 06:40:45,924 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 580 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:45,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 407 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2272 Invalid, 0 Unknown, 29 Unchecked, 1.2s Time] [2022-01-18 06:40:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8785 states. [2022-01-18 06:40:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8785 to 4729. [2022-01-18 06:40:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4728 states have (on average 3.425549915397631) internal successors, (16196), 4728 states have internal predecessors, (16196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 16196 transitions. [2022-01-18 06:40:46,019 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 16196 transitions. Word has length 30 [2022-01-18 06:40:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:46,019 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 16196 transitions. [2022-01-18 06:40:46,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:40:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 16196 transitions. [2022-01-18 06:40:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:46,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:46,026 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:46,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-01-18 06:40:46,227 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 [2022-01-18 06:40:46,227 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1537927686, now seen corresponding path program 14 times [2022-01-18 06:40:46,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390905237] [2022-01-18 06:40:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:46,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:46,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390905237] [2022-01-18 06:40:46,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390905237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982041404] [2022-01-18 06:40:46,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:40:46,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:46,584 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) [2022-01-18 06:40:46,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 06:40:46,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:40:46,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:46,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:40:46,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:47,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:47,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-01-18 06:40:47,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:40:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:47,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:47,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,356 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:47,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:40:47,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:47,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:40:47,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,701 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:47,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:47,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:47,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:47,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:47,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982041404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:47,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:47,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:40:47,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015782881] [2022-01-18 06:40:47,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:47,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:40:47,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:40:47,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:40:47,978 INFO L87 Difference]: Start difference. First operand 4729 states and 16196 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:52,064 INFO L93 Difference]: Finished difference Result 8821 states and 27736 transitions. [2022-01-18 06:40:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 06:40:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:40:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:52,080 INFO L225 Difference]: With dead ends: 8821 [2022-01-18 06:40:52,080 INFO L226 Difference]: Without dead ends: 8807 [2022-01-18 06:40:52,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2885 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1492, Invalid=6698, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 06:40:52,081 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 578 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:52,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 338 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1923 Invalid, 0 Unknown, 34 Unchecked, 1.0s Time] [2022-01-18 06:40:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2022-01-18 06:40:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 4729. [2022-01-18 06:40:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4728 states have (on average 3.425549915397631) internal successors, (16196), 4728 states have internal predecessors, (16196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 16196 transitions. [2022-01-18 06:40:52,176 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 16196 transitions. Word has length 30 [2022-01-18 06:40:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:52,176 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 16196 transitions. [2022-01-18 06:40:52,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 16196 transitions. [2022-01-18 06:40:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:52,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:52,182 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:52,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 06:40:52,382 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 [2022-01-18 06:40:52,383 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1205880190, now seen corresponding path program 15 times [2022-01-18 06:40:52,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990216041] [2022-01-18 06:40:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:52,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:52,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:52,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990216041] [2022-01-18 06:40:52,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990216041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:52,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416506293] [2022-01-18 06:40:52,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:40:52,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:52,684 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) [2022-01-18 06:40:52,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 06:40:52,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:40:52,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:52,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:40:52,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:53,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:53,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:40:53,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:53,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:40:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:53,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:53,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:53,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 93 [2022-01-18 06:40:53,544 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:53,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-01-18 06:40:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:54,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416506293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:54,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:54,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:40:54,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487197772] [2022-01-18 06:40:54,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:54,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:40:54,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:40:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:40:54,635 INFO L87 Difference]: Start difference. First operand 4729 states and 16196 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:40:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:40:57,863 INFO L93 Difference]: Finished difference Result 8618 states and 27320 transitions. [2022-01-18 06:40:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 06:40:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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 30 [2022-01-18 06:40:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:40:57,878 INFO L225 Difference]: With dead ends: 8618 [2022-01-18 06:40:57,879 INFO L226 Difference]: Without dead ends: 8603 [2022-01-18 06:40:57,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1221, Invalid=5259, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 06:40:57,879 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 405 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 794 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:40:57,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 384 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1177 Invalid, 0 Unknown, 794 Unchecked, 0.6s Time] [2022-01-18 06:40:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8603 states. [2022-01-18 06:40:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8603 to 4707. [2022-01-18 06:40:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 3.4271143221419464) internal successors, (16128), 4706 states have internal predecessors, (16128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:40:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 16128 transitions. [2022-01-18 06:40:57,964 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 16128 transitions. Word has length 30 [2022-01-18 06:40:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:40:57,964 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 16128 transitions. [2022-01-18 06:40:57,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:40:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 16128 transitions. [2022-01-18 06:40:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:40:57,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:40:57,970 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:40:57,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 06:40:58,170 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 [2022-01-18 06:40:58,171 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:40:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:40:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1894737772, now seen corresponding path program 16 times [2022-01-18 06:40:58,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:40:58,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900064092] [2022-01-18 06:40:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:40:58,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:40:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:40:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:58,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:40:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900064092] [2022-01-18 06:40:58,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900064092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:40:58,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177620525] [2022-01-18 06:40:58,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:40:58,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:40:58,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:40:58,509 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) [2022-01-18 06:40:58,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 06:40:58,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:40:58,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:40:58,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:40:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:40:58,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:40:58,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:58,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-01-18 06:40:58,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:58,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 06:40:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:58,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:40:59,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,218 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:59,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:40:59,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,241 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:59,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:40:59,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:59,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:40:59,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:40:59,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:40:59,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:40:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:40:59,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177620525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:40:59,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:40:59,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 32 [2022-01-18 06:40:59,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681177151] [2022-01-18 06:40:59,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:40:59,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:40:59,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:40:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:40:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:40:59,782 INFO L87 Difference]: Start difference. First operand 4707 states and 16128 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:41:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:41:05,380 INFO L93 Difference]: Finished difference Result 9415 states and 29580 transitions. [2022-01-18 06:41:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 06:41:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:41:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:41:05,397 INFO L225 Difference]: With dead ends: 9415 [2022-01-18 06:41:05,397 INFO L226 Difference]: Without dead ends: 9385 [2022-01-18 06:41:05,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4610 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2081, Invalid=10351, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 06:41:05,398 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 742 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:41:05,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 457 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 06:41:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2022-01-18 06:41:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 4740. [2022-01-18 06:41:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4739 states have (on average 3.4317366533023845) internal successors, (16263), 4739 states have internal predecessors, (16263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 16263 transitions. [2022-01-18 06:41:05,495 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 16263 transitions. Word has length 30 [2022-01-18 06:41:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:41:05,495 INFO L470 AbstractCegarLoop]: Abstraction has 4740 states and 16263 transitions. [2022-01-18 06:41:05,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:41:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 16263 transitions. [2022-01-18 06:41:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:41:05,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:41:05,501 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:41:05,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 06:41:05,702 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 [2022-01-18 06:41:05,703 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:41:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:41:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -260258954, now seen corresponding path program 17 times [2022-01-18 06:41:05,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:41:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651671354] [2022-01-18 06:41:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:41:05,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:41:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:06,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:41:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651671354] [2022-01-18 06:41:06,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651671354] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:41:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659084897] [2022-01-18 06:41:06,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:41:06,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:41:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:41:06,051 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) [2022-01-18 06:41:06,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 06:41:06,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:41:06,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:41:06,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:41:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:41:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:06,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:06,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-01-18 06:41:06,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:06,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 06:41:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:06,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:41:06,710 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:41:06,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:41:06,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:06,735 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:06,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:41:07,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:07,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:07,053 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:07,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:41:07,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:07,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:07,072 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:07,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:41:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:07,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659084897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:41:07,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:41:07,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:41:07,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31461064] [2022-01-18 06:41:07,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:41:07,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:41:07,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:41:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:41:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:41:07,303 INFO L87 Difference]: Start difference. First operand 4740 states and 16263 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:41:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:41:15,488 INFO L93 Difference]: Finished difference Result 9485 states and 30401 transitions. [2022-01-18 06:41:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 06:41:15,489 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:41:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:41:15,506 INFO L225 Difference]: With dead ends: 9485 [2022-01-18 06:41:15,506 INFO L226 Difference]: Without dead ends: 9451 [2022-01-18 06:41:15,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4862 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1848, Invalid=12672, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 06:41:15,508 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 680 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 3583 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 3583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:41:15,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 609 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 3583 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:41:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9451 states. [2022-01-18 06:41:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9451 to 4797. [2022-01-18 06:41:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 4796 states have (on average 3.4307756463719765) internal successors, (16454), 4796 states have internal predecessors, (16454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16454 transitions. [2022-01-18 06:41:15,607 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16454 transitions. Word has length 30 [2022-01-18 06:41:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:41:15,608 INFO L470 AbstractCegarLoop]: Abstraction has 4797 states and 16454 transitions. [2022-01-18 06:41:15,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:41:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16454 transitions. [2022-01-18 06:41:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:41:15,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:41:15,614 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:41:15,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 06:41:15,814 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 [2022-01-18 06:41:15,815 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:41:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:41:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1369414922, now seen corresponding path program 18 times [2022-01-18 06:41:15,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:41:15,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183331039] [2022-01-18 06:41:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:41:15,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:41:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:16,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:41:16,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183331039] [2022-01-18 06:41:16,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183331039] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:41:16,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558094649] [2022-01-18 06:41:16,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:41:16,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:41:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:41:16,195 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) [2022-01-18 06:41:16,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 06:41:16,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:41:16,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:41:16,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:41:16,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:41:16,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:16,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:16,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2022-01-18 06:41:16,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:16,603 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:16,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 61 [2022-01-18 06:41:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:17,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:41:17,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:17,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:17,478 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:17,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 77 [2022-01-18 06:41:17,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:17,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:17,495 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:17,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 61 [2022-01-18 06:41:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:17,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558094649] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:41:17,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:41:17,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 35 [2022-01-18 06:41:17,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746250460] [2022-01-18 06:41:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:41:17,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:41:17,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:41:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:41:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:41:17,727 INFO L87 Difference]: Start difference. First operand 4797 states and 16454 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:41:34,296 INFO L93 Difference]: Finished difference Result 15689 states and 52195 transitions. [2022-01-18 06:41:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-01-18 06:41:34,296 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:41:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:41:34,327 INFO L225 Difference]: With dead ends: 15689 [2022-01-18 06:41:34,328 INFO L226 Difference]: Without dead ends: 15644 [2022-01-18 06:41:34,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20846 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=6531, Invalid=42975, Unknown=0, NotChecked=0, Total=49506 [2022-01-18 06:41:34,330 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 790 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 7492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3563 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:41:34,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1161 Invalid, 7492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3715 Invalid, 0 Unknown, 3563 Unchecked, 2.0s Time] [2022-01-18 06:41:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15644 states. [2022-01-18 06:41:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15644 to 4905. [2022-01-18 06:41:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4905 states, 4904 states have (on average 3.4404567699836868) internal successors, (16872), 4904 states have internal predecessors, (16872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4905 states to 4905 states and 16872 transitions. [2022-01-18 06:41:34,483 INFO L78 Accepts]: Start accepts. Automaton has 4905 states and 16872 transitions. Word has length 30 [2022-01-18 06:41:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:41:34,483 INFO L470 AbstractCegarLoop]: Abstraction has 4905 states and 16872 transitions. [2022-01-18 06:41:34,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4905 states and 16872 transitions. [2022-01-18 06:41:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:41:34,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:41:34,490 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:41:34,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 06:41:34,691 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 [2022-01-18 06:41:34,691 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:41:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:41:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash 436133214, now seen corresponding path program 19 times [2022-01-18 06:41:34,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:41:34,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851931687] [2022-01-18 06:41:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:41:34,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:41:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:35,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:41:35,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851931687] [2022-01-18 06:41:35,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851931687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:41:35,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007492978] [2022-01-18 06:41:35,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:41:35,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:41:35,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:41:35,048 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) [2022-01-18 06:41:35,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 06:41:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:35,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:41:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:41:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:35,438 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:35,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2022-01-18 06:41:35,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:35,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:35,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 26 [2022-01-18 06:41:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:35,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:41:35,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:35,821 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:35,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:41:35,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:35,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:35,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:41:36,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:36,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:36,152 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:36,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:41:36,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:36,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:36,170 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:36,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:41:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:36,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007492978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:41:36,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:41:36,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 31 [2022-01-18 06:41:36,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510836580] [2022-01-18 06:41:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:41:36,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:41:36,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:41:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:41:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:41:36,388 INFO L87 Difference]: Start difference. First operand 4905 states and 16872 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:41:42,237 INFO L93 Difference]: Finished difference Result 9970 states and 31516 transitions. [2022-01-18 06:41:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 06:41:42,237 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:41:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:41:42,257 INFO L225 Difference]: With dead ends: 9970 [2022-01-18 06:41:42,257 INFO L226 Difference]: Without dead ends: 9940 [2022-01-18 06:41:42,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2292, Invalid=10590, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 06:41:42,258 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 807 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:41:42,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 649 Invalid, 3200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 2484 Invalid, 0 Unknown, 388 Unchecked, 1.3s Time] [2022-01-18 06:41:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2022-01-18 06:41:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 4932. [2022-01-18 06:41:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.445548570269722) internal successors, (16990), 4931 states have internal predecessors, (16990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16990 transitions. [2022-01-18 06:41:42,362 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16990 transitions. Word has length 30 [2022-01-18 06:41:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:41:42,363 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16990 transitions. [2022-01-18 06:41:42,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16990 transitions. [2022-01-18 06:41:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:41:42,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:41:42,369 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:41:42,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 06:41:42,569 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 [2022-01-18 06:41:42,570 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:41:42,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:41:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 608056734, now seen corresponding path program 20 times [2022-01-18 06:41:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:41:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645327663] [2022-01-18 06:41:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:41:42,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:41:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:42,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:41:42,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645327663] [2022-01-18 06:41:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645327663] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:41:42,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046624186] [2022-01-18 06:41:42,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:41:42,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:41:42,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:41:42,905 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) [2022-01-18 06:41:42,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 06:41:42,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:41:42,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:41:42,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:41:42,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:41:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:43,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:43,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-01-18 06:41:43,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2022-01-18 06:41:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:43,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:41:43,600 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:41:43,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:41:43,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:43,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:43,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:41:43,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:43,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:43,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:43,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:41:43,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:43,981 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:43,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:41:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:44,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046624186] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:41:44,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:41:44,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-01-18 06:41:44,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754820386] [2022-01-18 06:41:44,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:41:44,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:41:44,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:41:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:41:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:41:44,204 INFO L87 Difference]: Start difference. First operand 4932 states and 16990 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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) [2022-01-18 06:41:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:41:52,004 INFO L93 Difference]: Finished difference Result 10167 states and 32691 transitions. [2022-01-18 06:41:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 06:41:52,004 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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 30 [2022-01-18 06:41:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:41:52,022 INFO L225 Difference]: With dead ends: 10167 [2022-01-18 06:41:52,022 INFO L226 Difference]: Without dead ends: 10094 [2022-01-18 06:41:52,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4754 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1844, Invalid=12198, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 06:41:52,023 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 644 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 725 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:41:52,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 705 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 3064 Invalid, 0 Unknown, 725 Unchecked, 1.6s Time] [2022-01-18 06:41:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-01-18 06:41:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 4922. [2022-01-18 06:41:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 4921 states have (on average 3.4450314976630767) internal successors, (16953), 4921 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:41:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 16953 transitions. [2022-01-18 06:41:52,127 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 16953 transitions. Word has length 30 [2022-01-18 06:41:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:41:52,127 INFO L470 AbstractCegarLoop]: Abstraction has 4922 states and 16953 transitions. [2022-01-18 06:41:52,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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) [2022-01-18 06:41:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 16953 transitions. [2022-01-18 06:41:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:41:52,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:41:52,134 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] [2022-01-18 06:41:52,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 06:41:52,334 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 [2022-01-18 06:41:52,334 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:41:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:41:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash -64309065, now seen corresponding path program 37 times [2022-01-18 06:41:52,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:41:52,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784925761] [2022-01-18 06:41:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:41:52,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:41:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:52,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:41:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784925761] [2022-01-18 06:41:52,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784925761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:41:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466658478] [2022-01-18 06:41:52,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:41:52,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:41:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:41:52,815 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) [2022-01-18 06:41:52,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 06:41:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:41:52,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:41:52,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:41:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-01-18 06:41:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:53,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-18 06:41:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:53,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:41:53,516 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:41:53,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:41:53,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:41:53,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:41:53,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:53,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:41:53,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:41:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:41:53,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:41:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:41:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466658478] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:41:53,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:41:53,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 06:41:53,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860596083] [2022-01-18 06:41:53,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:41:53,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:41:53,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:41:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:41:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:41:53,710 INFO L87 Difference]: Start difference. First operand 4922 states and 16953 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:06,608 INFO L93 Difference]: Finished difference Result 8870 states and 29263 transitions. [2022-01-18 06:42:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 06:42:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:06,624 INFO L225 Difference]: With dead ends: 8870 [2022-01-18 06:42:06,625 INFO L226 Difference]: Without dead ends: 8823 [2022-01-18 06:42:06,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8817 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3034, Invalid=20836, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 06:42:06,626 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 661 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:06,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 606 Invalid, 4067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 06:42:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2022-01-18 06:42:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 4922. [2022-01-18 06:42:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 4921 states have (on average 3.4450314976630767) internal successors, (16953), 4921 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 16953 transitions. [2022-01-18 06:42:06,718 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 16953 transitions. Word has length 30 [2022-01-18 06:42:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:06,718 INFO L470 AbstractCegarLoop]: Abstraction has 4922 states and 16953 transitions. [2022-01-18 06:42:06,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 16953 transitions. [2022-01-18 06:42:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:06,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:06,752 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:06,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 06:42:06,952 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 [2022-01-18 06:42:06,952 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash -523918848, now seen corresponding path program 21 times [2022-01-18 06:42:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:06,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098533126] [2022-01-18 06:42:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:06,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:07,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:07,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098533126] [2022-01-18 06:42:07,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098533126] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:07,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909357912] [2022-01-18 06:42:07,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:42:07,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:07,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:07,315 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) [2022-01-18 06:42:07,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 06:42:07,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:42:07,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:07,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:42:07,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:07,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:07,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-18 06:42:07,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:07,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:07,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-01-18 06:42:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:07,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:08,086 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:08,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 92 [2022-01-18 06:42:08,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:08,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 76 [2022-01-18 06:42:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:09,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909357912] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:09,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:09,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 06:42:09,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115589212] [2022-01-18 06:42:09,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:09,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:42:09,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:42:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:42:09,081 INFO L87 Difference]: Start difference. First operand 4922 states and 16953 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:12,800 INFO L93 Difference]: Finished difference Result 9342 states and 29595 transitions. [2022-01-18 06:42:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 06:42:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:12,820 INFO L225 Difference]: With dead ends: 9342 [2022-01-18 06:42:12,820 INFO L226 Difference]: Without dead ends: 9285 [2022-01-18 06:42:12,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 47 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2993 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1313, Invalid=7059, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 06:42:12,822 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 486 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 665 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:12,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 417 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1792 Invalid, 0 Unknown, 665 Unchecked, 0.9s Time] [2022-01-18 06:42:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2022-01-18 06:42:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 4967. [2022-01-18 06:42:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 4966 states have (on average 3.4440193314538865) internal successors, (17103), 4966 states have internal predecessors, (17103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 17103 transitions. [2022-01-18 06:42:12,924 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 17103 transitions. Word has length 30 [2022-01-18 06:42:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 4967 states and 17103 transitions. [2022-01-18 06:42:12,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 17103 transitions. [2022-01-18 06:42:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:12,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:12,932 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:12,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 06:42:13,132 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 [2022-01-18 06:42:13,132 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash -607240742, now seen corresponding path program 22 times [2022-01-18 06:42:13,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:13,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551884912] [2022-01-18 06:42:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:13,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:13,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551884912] [2022-01-18 06:42:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551884912] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:13,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950435661] [2022-01-18 06:42:13,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:42:13,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:13,522 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) [2022-01-18 06:42:13,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 06:42:13,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:42:13,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:13,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:42:13,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:13,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:13,867 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:13,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-01-18 06:42:13,872 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:13,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 06:42:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:13,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:14,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,202 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:14,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:42:14,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,223 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:14,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:42:14,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:14,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:42:14,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:14,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:14,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:42:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:14,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950435661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:14,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:14,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 31 [2022-01-18 06:42:14,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947106314] [2022-01-18 06:42:14,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:14,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:42:14,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:42:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:42:14,749 INFO L87 Difference]: Start difference. First operand 4967 states and 17103 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:21,577 INFO L93 Difference]: Finished difference Result 10333 states and 32492 transitions. [2022-01-18 06:42:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 06:42:21,578 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:21,597 INFO L225 Difference]: With dead ends: 10333 [2022-01-18 06:42:21,597 INFO L226 Difference]: Without dead ends: 10238 [2022-01-18 06:42:21,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5490 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2237, Invalid=12769, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 06:42:21,599 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 681 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 3069 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 3069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:21,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 565 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 3069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:42:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-01-18 06:42:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 5005. [2022-01-18 06:42:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 5004 states have (on average 3.447841726618705) internal successors, (17253), 5004 states have internal predecessors, (17253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 17253 transitions. [2022-01-18 06:42:21,731 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 17253 transitions. Word has length 30 [2022-01-18 06:42:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:21,732 INFO L470 AbstractCegarLoop]: Abstraction has 5005 states and 17253 transitions. [2022-01-18 06:42:21,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 17253 transitions. [2022-01-18 06:42:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:21,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:21,738 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:21,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 06:42:21,939 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 [2022-01-18 06:42:21,939 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:21,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -246142976, now seen corresponding path program 23 times [2022-01-18 06:42:21,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:21,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145212754] [2022-01-18 06:42:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:21,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:22,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145212754] [2022-01-18 06:42:22,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145212754] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087689280] [2022-01-18 06:42:22,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:42:22,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:22,421 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) [2022-01-18 06:42:22,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 06:42:22,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:42:22,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:22,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:42:22,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:22,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:22,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2022-01-18 06:42:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:22,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:22,747 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:22,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-01-18 06:42:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:22,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:23,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:23,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:42:23,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:23,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:42:23,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,419 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:23,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:42:23,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:23,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:23,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:42:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:23,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087689280] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:23,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:23,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2022-01-18 06:42:23,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972841693] [2022-01-18 06:42:23,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:23,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:42:23,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:42:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:42:23,726 INFO L87 Difference]: Start difference. First operand 5005 states and 17253 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:29,249 INFO L93 Difference]: Finished difference Result 9678 states and 30736 transitions. [2022-01-18 06:42:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 06:42:29,249 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:29,266 INFO L225 Difference]: With dead ends: 9678 [2022-01-18 06:42:29,267 INFO L226 Difference]: Without dead ends: 9528 [2022-01-18 06:42:29,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3505 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1743, Invalid=8763, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 06:42:29,267 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 614 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:29,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 476 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 06:42:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2022-01-18 06:42:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 5028. [2022-01-18 06:42:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 3.448975532126517) internal successors, (17338), 5027 states have internal predecessors, (17338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:29,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 17338 transitions. [2022-01-18 06:42:29,377 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 17338 transitions. Word has length 30 [2022-01-18 06:42:29,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:29,377 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 17338 transitions. [2022-01-18 06:42:29,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 17338 transitions. [2022-01-18 06:42:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:29,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:29,384 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:29,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 06:42:29,585 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 [2022-01-18 06:42:29,585 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1083842874, now seen corresponding path program 24 times [2022-01-18 06:42:29,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:29,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807671407] [2022-01-18 06:42:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:29,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:29,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807671407] [2022-01-18 06:42:29,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807671407] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14613652] [2022-01-18 06:42:29,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:42:29,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:29,950 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) [2022-01-18 06:42:29,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 06:42:29,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:42:29,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:29,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:42:29,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:30,306 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:30,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 48 [2022-01-18 06:42:30,315 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:30,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 52 [2022-01-18 06:42:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:30,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:30,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:30,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:30,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:30,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:42:30,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:30,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:30,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:30,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:42:31,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:31,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-01-18 06:42:31,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:31,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-01-18 06:42:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:31,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14613652] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:31,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:31,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-01-18 06:42:31,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837271428] [2022-01-18 06:42:31,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:31,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:42:31,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:42:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:42:31,167 INFO L87 Difference]: Start difference. First operand 5028 states and 17338 transitions. Second operand has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:35,940 INFO L93 Difference]: Finished difference Result 9618 states and 31388 transitions. [2022-01-18 06:42:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 06:42:35,941 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:35,958 INFO L225 Difference]: With dead ends: 9618 [2022-01-18 06:42:35,959 INFO L226 Difference]: Without dead ends: 9582 [2022-01-18 06:42:35,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1184, Invalid=7558, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 06:42:35,959 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 665 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:35,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 544 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:42:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9582 states. [2022-01-18 06:42:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9582 to 5059. [2022-01-18 06:42:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 5058 states have (on average 3.4499802293396598) internal successors, (17450), 5058 states have internal predecessors, (17450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 17450 transitions. [2022-01-18 06:42:36,064 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 17450 transitions. Word has length 30 [2022-01-18 06:42:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:36,064 INFO L470 AbstractCegarLoop]: Abstraction has 5059 states and 17450 transitions. [2022-01-18 06:42:36,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 17450 transitions. [2022-01-18 06:42:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:36,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:36,072 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:36,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 06:42:36,272 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 [2022-01-18 06:42:36,273 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -86404540, now seen corresponding path program 25 times [2022-01-18 06:42:36,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:36,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138984555] [2022-01-18 06:42:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:36,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:36,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:36,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138984555] [2022-01-18 06:42:36,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138984555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:36,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306699137] [2022-01-18 06:42:36,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:42:36,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:36,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:36,611 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) [2022-01-18 06:42:36,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 06:42:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:36,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:42:36,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:37,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:37,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-01-18 06:42:37,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-18 06:42:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:37,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:37,340 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:42:37,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:42:37,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,363 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:37,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:42:37,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:37,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:42:37,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:37,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:37,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:42:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:37,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306699137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:37,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:37,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 06:42:37,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9895882] [2022-01-18 06:42:37,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:37,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:42:37,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:42:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:42:37,888 INFO L87 Difference]: Start difference. First operand 5059 states and 17450 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:42:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:41,296 INFO L93 Difference]: Finished difference Result 8969 states and 29168 transitions. [2022-01-18 06:42:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:42:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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 30 [2022-01-18 06:42:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:41,315 INFO L225 Difference]: With dead ends: 8969 [2022-01-18 06:42:41,315 INFO L226 Difference]: Without dead ends: 8935 [2022-01-18 06:42:41,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=633, Invalid=5067, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:42:41,316 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 326 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:41,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 468 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 06:42:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8935 states. [2022-01-18 06:42:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8935 to 5120. [2022-01-18 06:42:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5119 states have (on average 3.4506739597577654) internal successors, (17664), 5119 states have internal predecessors, (17664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 17664 transitions. [2022-01-18 06:42:41,419 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 17664 transitions. Word has length 30 [2022-01-18 06:42:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:41,419 INFO L470 AbstractCegarLoop]: Abstraction has 5120 states and 17664 transitions. [2022-01-18 06:42:41,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 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) [2022-01-18 06:42:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 17664 transitions. [2022-01-18 06:42:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:41,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:41,426 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:41,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 06:42:41,627 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 [2022-01-18 06:42:41,627 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1314010376, now seen corresponding path program 26 times [2022-01-18 06:42:41,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:41,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669345789] [2022-01-18 06:42:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:41,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:41,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669345789] [2022-01-18 06:42:41,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669345789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867821941] [2022-01-18 06:42:41,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:42:41,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:41,985 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) [2022-01-18 06:42:41,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 06:42:42,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:42:42,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:42,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:42:42,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:42,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:42:42,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:42:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:42,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:42,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,627 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:42,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:42:42,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:42,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:42:42,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,988 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:42,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:42:42,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:42,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:43,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:43,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:42:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867821941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:43,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:43,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:42:43,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129921275] [2022-01-18 06:42:43,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:43,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:42:43,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:42:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:42:43,261 INFO L87 Difference]: Start difference. First operand 5120 states and 17664 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:46,208 INFO L93 Difference]: Finished difference Result 8343 states and 26950 transitions. [2022-01-18 06:42:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 06:42:46,209 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:46,225 INFO L225 Difference]: With dead ends: 8343 [2022-01-18 06:42:46,225 INFO L226 Difference]: Without dead ends: 8313 [2022-01-18 06:42:46,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=956, Invalid=5364, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 06:42:46,226 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 400 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:46,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 303 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1761 Invalid, 0 Unknown, 184 Unchecked, 0.9s Time] [2022-01-18 06:42:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2022-01-18 06:42:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 5156. [2022-01-18 06:42:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 5155 states have (on average 3.45082444228904) internal successors, (17789), 5155 states have internal predecessors, (17789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 17789 transitions. [2022-01-18 06:42:46,320 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 17789 transitions. Word has length 30 [2022-01-18 06:42:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 5156 states and 17789 transitions. [2022-01-18 06:42:46,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 17789 transitions. [2022-01-18 06:42:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:46,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:46,327 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:46,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 06:42:46,527 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,SelfDestructingSolverStorable65 [2022-01-18 06:42:46,527 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2110958692, now seen corresponding path program 27 times [2022-01-18 06:42:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155348237] [2022-01-18 06:42:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:46,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155348237] [2022-01-18 06:42:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155348237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778710622] [2022-01-18 06:42:46,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:42:46,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:46,850 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) [2022-01-18 06:42:46,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 06:42:46,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:42:46,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 06:42:46,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:47,218 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:47,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 53 [2022-01-18 06:42:47,227 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:47,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 61 [2022-01-18 06:42:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:47,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:47,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,791 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:47,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:42:47,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,814 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:47,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:42:47,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-01-18 06:42:47,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:47,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-01-18 06:42:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:48,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778710622] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:48,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:48,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-01-18 06:42:48,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851498217] [2022-01-18 06:42:48,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:48,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:42:48,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:42:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:42:48,082 INFO L87 Difference]: Start difference. First operand 5156 states and 17789 transitions. Second operand has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:42:53,385 INFO L93 Difference]: Finished difference Result 9452 states and 30912 transitions. [2022-01-18 06:42:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 06:42:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:42:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:42:53,403 INFO L225 Difference]: With dead ends: 9452 [2022-01-18 06:42:53,403 INFO L226 Difference]: Without dead ends: 9437 [2022-01-18 06:42:53,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2624 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1233, Invalid=8079, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 06:42:53,404 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 835 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:42:53,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 453 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 06:42:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2022-01-18 06:42:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 5134. [2022-01-18 06:42:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5133 states have (on average 3.450613676212741) internal successors, (17712), 5133 states have internal predecessors, (17712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 17712 transitions. [2022-01-18 06:42:53,506 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 17712 transitions. Word has length 30 [2022-01-18 06:42:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:42:53,507 INFO L470 AbstractCegarLoop]: Abstraction has 5134 states and 17712 transitions. [2022-01-18 06:42:53,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:42:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 17712 transitions. [2022-01-18 06:42:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:42:53,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:42:53,514 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:42:53,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 06:42:53,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:53,714 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:42:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:42:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2100686710, now seen corresponding path program 28 times [2022-01-18 06:42:53,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:42:53,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150464871] [2022-01-18 06:42:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:42:53,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:42:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:42:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:54,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:42:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150464871] [2022-01-18 06:42:54,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150464871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:42:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980789021] [2022-01-18 06:42:54,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:42:54,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:42:54,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:42:54,089 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) [2022-01-18 06:42:54,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 06:42:54,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:42:54,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:42:54,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:42:54,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:42:54,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:54,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:54,406 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:54,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 42 [2022-01-18 06:42:54,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:42:54,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:54,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-18 06:42:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:54,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:42:54,825 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:42:54,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:42:54,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:54,848 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:54,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:42:55,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:55,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:55,128 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:55,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:42:55,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:55,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:42:55,147 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:42:55,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:42:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:42:55,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980789021] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:42:55,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:42:55,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:42:55,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050213730] [2022-01-18 06:42:55,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:42:55,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:42:55,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:42:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:42:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:42:55,359 INFO L87 Difference]: Start difference. First operand 5134 states and 17712 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:43:02,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:02,381 INFO L93 Difference]: Finished difference Result 11132 states and 35856 transitions. [2022-01-18 06:43:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 06:43:02,382 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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 30 [2022-01-18 06:43:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:02,404 INFO L225 Difference]: With dead ends: 11132 [2022-01-18 06:43:02,404 INFO L226 Difference]: Without dead ends: 11029 [2022-01-18 06:43:02,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1864, Invalid=13388, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 06:43:02,405 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 577 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 752 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:02,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 901 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 3768 Invalid, 0 Unknown, 752 Unchecked, 1.8s Time] [2022-01-18 06:43:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11029 states. [2022-01-18 06:43:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11029 to 5128. [2022-01-18 06:43:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5128 states, 5127 states have (on average 3.4488004681100057) internal successors, (17682), 5127 states have internal predecessors, (17682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 17682 transitions. [2022-01-18 06:43:02,538 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 17682 transitions. Word has length 30 [2022-01-18 06:43:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:02,538 INFO L470 AbstractCegarLoop]: Abstraction has 5128 states and 17682 transitions. [2022-01-18 06:43:02,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:43:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 17682 transitions. [2022-01-18 06:43:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:02,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:02,545 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:02,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 06:43:02,745 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,SelfDestructingSolverStorable67 [2022-01-18 06:43:02,746 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1568664778, now seen corresponding path program 29 times [2022-01-18 06:43:02,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:02,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118286328] [2022-01-18 06:43:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:02,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:03,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118286328] [2022-01-18 06:43:03,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118286328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079490742] [2022-01-18 06:43:03,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:43:03,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:03,099 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) [2022-01-18 06:43:03,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 06:43:03,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:43:03,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:03,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:43:03,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:03,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:03,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:43:03,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:03,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:43:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:03,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:03,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:03,824 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:03,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:03,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:03,845 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:03,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:04,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:04,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:04,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:04,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:04,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:04,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:04,192 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:04,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:04,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079490742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:04,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:04,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-01-18 06:43:04,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800689305] [2022-01-18 06:43:04,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:04,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:43:04,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:43:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:43:04,408 INFO L87 Difference]: Start difference. First operand 5128 states and 17682 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:43:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:10,620 INFO L93 Difference]: Finished difference Result 9405 states and 30134 transitions. [2022-01-18 06:43:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 06:43:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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 30 [2022-01-18 06:43:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:10,639 INFO L225 Difference]: With dead ends: 9405 [2022-01-18 06:43:10,640 INFO L226 Difference]: Without dead ends: 9375 [2022-01-18 06:43:10,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6342 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2071, Invalid=15485, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 06:43:10,641 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 461 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:10,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 582 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2581 Invalid, 0 Unknown, 370 Unchecked, 1.4s Time] [2022-01-18 06:43:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9375 states. [2022-01-18 06:43:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9375 to 5146. [2022-01-18 06:43:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5145 states have (on average 3.4487852283770652) internal successors, (17744), 5145 states have internal predecessors, (17744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 17744 transitions. [2022-01-18 06:43:10,767 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 17744 transitions. Word has length 30 [2022-01-18 06:43:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:10,767 INFO L470 AbstractCegarLoop]: Abstraction has 5146 states and 17744 transitions. [2022-01-18 06:43:10,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:43:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 17744 transitions. [2022-01-18 06:43:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:10,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:10,775 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:10,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 06:43:10,976 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,SelfDestructingSolverStorable68 [2022-01-18 06:43:10,976 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1175143098, now seen corresponding path program 30 times [2022-01-18 06:43:10,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:10,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031346982] [2022-01-18 06:43:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:10,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:11,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:11,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031346982] [2022-01-18 06:43:11,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031346982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:11,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356112889] [2022-01-18 06:43:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:43:11,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:11,340 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) [2022-01-18 06:43:11,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 06:43:11,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:43:11,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:11,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:43:11,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:11,662 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:11,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2022-01-18 06:43:11,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:43:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:11,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:12,032 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:43:12,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:12,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:12,055 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:12,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:12,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:12,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:12,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:12,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:12,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:12,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:12,345 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:12,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:12,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356112889] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:12,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:12,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-01-18 06:43:12,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436473277] [2022-01-18 06:43:12,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:12,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:43:12,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:43:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:43:12,551 INFO L87 Difference]: Start difference. First operand 5146 states and 17744 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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) [2022-01-18 06:43:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:16,799 INFO L93 Difference]: Finished difference Result 9366 states and 30559 transitions. [2022-01-18 06:43:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:43:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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 30 [2022-01-18 06:43:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:16,818 INFO L225 Difference]: With dead ends: 9366 [2022-01-18 06:43:16,818 INFO L226 Difference]: Without dead ends: 9307 [2022-01-18 06:43:16,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=995, Invalid=6661, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 06:43:16,819 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 422 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 3096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 602 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:16,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 572 Invalid, 3096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2348 Invalid, 0 Unknown, 602 Unchecked, 1.2s Time] [2022-01-18 06:43:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-01-18 06:43:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 5128. [2022-01-18 06:43:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5128 states, 5127 states have (on average 3.4488004681100057) internal successors, (17682), 5127 states have internal predecessors, (17682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 17682 transitions. [2022-01-18 06:43:16,929 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 17682 transitions. Word has length 30 [2022-01-18 06:43:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:16,929 INFO L470 AbstractCegarLoop]: Abstraction has 5128 states and 17682 transitions. [2022-01-18 06:43:16,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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) [2022-01-18 06:43:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 17682 transitions. [2022-01-18 06:43:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:16,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:16,936 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:16,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 06:43:17,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 06:43:17,137 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash -992757202, now seen corresponding path program 31 times [2022-01-18 06:43:17,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698641154] [2022-01-18 06:43:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:17,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:17,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:17,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698641154] [2022-01-18 06:43:17,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698641154] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:17,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488293800] [2022-01-18 06:43:17,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:43:17,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:17,501 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) [2022-01-18 06:43:17,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 06:43:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:43:17,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:17,770 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:17,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2022-01-18 06:43:17,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:43:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:17,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:18,183 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:43:18,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:18,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:18,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:18,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:18,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:18,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:18,527 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:18,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:18,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:18,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:18,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:18,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:18,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488293800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:18,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:18,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-01-18 06:43:18,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262190273] [2022-01-18 06:43:18,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:43:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:43:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:43:18,774 INFO L87 Difference]: Start difference. First operand 5128 states and 17682 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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) [2022-01-18 06:43:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:22,692 INFO L93 Difference]: Finished difference Result 9730 states and 31641 transitions. [2022-01-18 06:43:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 06:43:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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 30 [2022-01-18 06:43:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:22,715 INFO L225 Difference]: With dead ends: 9730 [2022-01-18 06:43:22,715 INFO L226 Difference]: Without dead ends: 9641 [2022-01-18 06:43:22,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=971, Invalid=6511, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 06:43:22,716 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 404 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:22,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 667 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2636 Invalid, 0 Unknown, 759 Unchecked, 1.3s Time] [2022-01-18 06:43:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2022-01-18 06:43:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 5129. [2022-01-18 06:43:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 3.4481279251170047) internal successors, (17682), 5128 states have internal predecessors, (17682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 17682 transitions. [2022-01-18 06:43:22,852 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 17682 transitions. Word has length 30 [2022-01-18 06:43:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:22,853 INFO L470 AbstractCegarLoop]: Abstraction has 5129 states and 17682 transitions. [2022-01-18 06:43:22,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 31 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) [2022-01-18 06:43:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 17682 transitions. [2022-01-18 06:43:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:22,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:22,860 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:22,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 06:43:23,060 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,SelfDestructingSolverStorable70 [2022-01-18 06:43:23,060 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 882054174, now seen corresponding path program 32 times [2022-01-18 06:43:23,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:23,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279545275] [2022-01-18 06:43:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:23,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:23,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:23,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279545275] [2022-01-18 06:43:23,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279545275] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:23,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518263436] [2022-01-18 06:43:23,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:43:23,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:23,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:23,492 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) [2022-01-18 06:43:23,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 06:43:23,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:43:23,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:23,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:43:23,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:23,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:23,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:23,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2022-01-18 06:43:23,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:43:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:23,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:24,199 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:43:24,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:24,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:24,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:24,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:24,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:24,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:24,509 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:24,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:24,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:24,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:24,527 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:24,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:24,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518263436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:24,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:24,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:43:24,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414608762] [2022-01-18 06:43:24,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:43:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:43:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:43:24,742 INFO L87 Difference]: Start difference. First operand 5129 states and 17682 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:43:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:28,081 INFO L93 Difference]: Finished difference Result 9265 states and 30079 transitions. [2022-01-18 06:43:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 06:43:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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 30 [2022-01-18 06:43:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:28,097 INFO L225 Difference]: With dead ends: 9265 [2022-01-18 06:43:28,098 INFO L226 Difference]: Without dead ends: 9231 [2022-01-18 06:43:28,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=884, Invalid=6088, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:43:28,098 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 431 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 448 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:28,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 512 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2311 Invalid, 0 Unknown, 448 Unchecked, 1.1s Time] [2022-01-18 06:43:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9231 states. [2022-01-18 06:43:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 5125. [2022-01-18 06:43:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 3.4484777517564402) internal successors, (17670), 5124 states have internal predecessors, (17670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 17670 transitions. [2022-01-18 06:43:28,198 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 17670 transitions. Word has length 30 [2022-01-18 06:43:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:28,199 INFO L470 AbstractCegarLoop]: Abstraction has 5125 states and 17670 transitions. [2022-01-18 06:43:28,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:43:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 17670 transitions. [2022-01-18 06:43:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:28,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:28,206 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:28,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 06:43:28,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:28,406 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash -169923416, now seen corresponding path program 33 times [2022-01-18 06:43:28,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:28,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16414362] [2022-01-18 06:43:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:28,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:28,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:28,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16414362] [2022-01-18 06:43:28,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16414362] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:28,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844347408] [2022-01-18 06:43:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:43:28,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:28,738 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) [2022-01-18 06:43:28,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 06:43:28,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:43:28,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:43:28,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:29,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:29,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 57 [2022-01-18 06:43:29,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:29,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 87 [2022-01-18 06:43:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:29,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:30,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:30,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 93 [2022-01-18 06:43:30,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:30,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-01-18 06:43:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:31,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844347408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:31,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:31,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-01-18 06:43:31,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873086749] [2022-01-18 06:43:31,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:43:31,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:43:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:43:31,518 INFO L87 Difference]: Start difference. First operand 5125 states and 17670 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 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) [2022-01-18 06:43:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:34,297 INFO L93 Difference]: Finished difference Result 8763 states and 29254 transitions. [2022-01-18 06:43:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:43:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 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 30 [2022-01-18 06:43:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:34,315 INFO L225 Difference]: With dead ends: 8763 [2022-01-18 06:43:34,315 INFO L226 Difference]: Without dead ends: 8727 [2022-01-18 06:43:34,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=855, Invalid=4997, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 06:43:34,315 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 437 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 941 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:34,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 345 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1389 Invalid, 0 Unknown, 941 Unchecked, 0.8s Time] [2022-01-18 06:43:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2022-01-18 06:43:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 5167. [2022-01-18 06:43:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 3.446380178087495) internal successors, (17804), 5166 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 17804 transitions. [2022-01-18 06:43:34,426 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 17804 transitions. Word has length 30 [2022-01-18 06:43:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:34,426 INFO L470 AbstractCegarLoop]: Abstraction has 5167 states and 17804 transitions. [2022-01-18 06:43:34,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 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) [2022-01-18 06:43:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 17804 transitions. [2022-01-18 06:43:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:34,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:34,434 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:34,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 06:43:34,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:34,637 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1970047154, now seen corresponding path program 34 times [2022-01-18 06:43:34,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:34,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658118479] [2022-01-18 06:43:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:34,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:34,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658118479] [2022-01-18 06:43:34,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658118479] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745934601] [2022-01-18 06:43:34,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:43:34,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:34,997 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) [2022-01-18 06:43:34,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 06:43:35,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:43:35,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:35,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:43:35,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:35,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:35,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:35,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:43:35,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:35,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:43:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:35,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:35,727 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:43:35,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:35,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:35,750 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:35,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:36,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:36,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:36,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:36,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:36,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:36,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:36,095 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:36,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:36,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745934601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:36,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:36,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:43:36,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302434912] [2022-01-18 06:43:36,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:36,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:43:36,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:43:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:43:36,329 INFO L87 Difference]: Start difference. First operand 5167 states and 17804 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:43:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:41,915 INFO L93 Difference]: Finished difference Result 10064 states and 32690 transitions. [2022-01-18 06:43:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 06:43:41,915 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:43:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:41,935 INFO L225 Difference]: With dead ends: 10064 [2022-01-18 06:43:41,935 INFO L226 Difference]: Without dead ends: 10030 [2022-01-18 06:43:41,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3703 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1381, Invalid=10391, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 06:43:41,936 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 462 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:41,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 457 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2884 Invalid, 0 Unknown, 273 Unchecked, 1.6s Time] [2022-01-18 06:43:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10030 states. [2022-01-18 06:43:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10030 to 5264. [2022-01-18 06:43:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.444423332699981) internal successors, (18128), 5263 states have internal predecessors, (18128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 18128 transitions. [2022-01-18 06:43:42,058 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 18128 transitions. Word has length 30 [2022-01-18 06:43:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:42,058 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 18128 transitions. [2022-01-18 06:43:42,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:43:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 18128 transitions. [2022-01-18 06:43:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:42,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:42,066 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:42,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 06:43:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:42,267 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1265219960, now seen corresponding path program 35 times [2022-01-18 06:43:42,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:42,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073089942] [2022-01-18 06:43:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:42,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:42,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073089942] [2022-01-18 06:43:42,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073089942] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146438272] [2022-01-18 06:43:42,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:43:42,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:42,631 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) [2022-01-18 06:43:42,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 06:43:42,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:43:42,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:42,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:43:42,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:42,971 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:42,972 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2022-01-18 06:43:42,977 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:42,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 06:43:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:43,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:43,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,371 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:43,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:43:43,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,392 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:43,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:43:43,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,709 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:43,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:43,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:43,729 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:43,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:43,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146438272] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:43,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:43,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 33 [2022-01-18 06:43:43,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297639358] [2022-01-18 06:43:43,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:43,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:43:43,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:43:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:43:43,981 INFO L87 Difference]: Start difference. First operand 5264 states and 18128 transitions. Second operand has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:43:54,428 INFO L93 Difference]: Finished difference Result 11819 states and 36632 transitions. [2022-01-18 06:43:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-18 06:43:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:43:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:43:54,452 INFO L225 Difference]: With dead ends: 11819 [2022-01-18 06:43:54,452 INFO L226 Difference]: Without dead ends: 11645 [2022-01-18 06:43:54,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11439 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3688, Invalid=28174, Unknown=0, NotChecked=0, Total=31862 [2022-01-18 06:43:54,454 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 723 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 4253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:43:54,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 869 Invalid, 4253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:43:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11645 states. [2022-01-18 06:43:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11645 to 5298. [2022-01-18 06:43:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 3.4470454974513878) internal successors, (18259), 5297 states have internal predecessors, (18259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 18259 transitions. [2022-01-18 06:43:54,597 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 18259 transitions. Word has length 30 [2022-01-18 06:43:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:43:54,597 INFO L470 AbstractCegarLoop]: Abstraction has 5298 states and 18259 transitions. [2022-01-18 06:43:54,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:43:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 18259 transitions. [2022-01-18 06:43:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:43:54,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:43:54,605 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:43:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 06:43:54,805 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,SelfDestructingSolverStorable74 [2022-01-18 06:43:54,806 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:43:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:43:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 596373144, now seen corresponding path program 36 times [2022-01-18 06:43:54,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:43:54,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068816529] [2022-01-18 06:43:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:43:54,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:43:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:43:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:55,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:43:55,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068816529] [2022-01-18 06:43:55,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068816529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:43:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113047679] [2022-01-18 06:43:55,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:43:55,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:43:55,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:43:55,206 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) [2022-01-18 06:43:55,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 06:43:55,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:43:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:43:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:43:55,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:43:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:43:55,508 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:55,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2022-01-18 06:43:55,513 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:55,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 06:43:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:55,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:43:55,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:55,903 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:55,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:43:55,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:55,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:55,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:43:56,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:56,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:56,202 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:56,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:43:56,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:56,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:43:56,222 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:43:56,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:43:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:43:56,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113047679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:43:56,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:43:56,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2022-01-18 06:43:56,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921914228] [2022-01-18 06:43:56,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:43:56,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:43:56,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:43:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:43:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:43:56,471 INFO L87 Difference]: Start difference. First operand 5298 states and 18259 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:01,649 INFO L93 Difference]: Finished difference Result 10021 states and 32027 transitions. [2022-01-18 06:44:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 06:44:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:44:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:01,670 INFO L225 Difference]: With dead ends: 10021 [2022-01-18 06:44:01,670 INFO L226 Difference]: Without dead ends: 9865 [2022-01-18 06:44:01,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3692 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1731, Invalid=9399, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 06:44:01,671 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 553 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:01,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 371 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 06:44:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-01-18 06:44:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5364. [2022-01-18 06:44:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 5363 states have (on average 3.442103300391572) internal successors, (18460), 5363 states have internal predecessors, (18460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 18460 transitions. [2022-01-18 06:44:01,800 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 18460 transitions. Word has length 30 [2022-01-18 06:44:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:01,801 INFO L470 AbstractCegarLoop]: Abstraction has 5364 states and 18460 transitions. [2022-01-18 06:44:01,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 18460 transitions. [2022-01-18 06:44:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:01,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:01,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:01,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 06:44:02,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:02,010 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1274241086, now seen corresponding path program 37 times [2022-01-18 06:44:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:02,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168553003] [2022-01-18 06:44:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:02,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:02,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:02,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168553003] [2022-01-18 06:44:02,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168553003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:02,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726220596] [2022-01-18 06:44:02,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:44:02,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:02,429 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) [2022-01-18 06:44:02,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 06:44:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:44:02,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:02,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:02,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:02,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-01-18 06:44:02,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:02,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:44:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:02,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:03,111 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:44:03,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:44:03,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:03,133 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:03,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:44:03,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:03,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:03,464 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:03,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:44:03,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:03,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:03,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:03,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:44:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:03,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726220596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:03,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:03,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:44:03,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062908889] [2022-01-18 06:44:03,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:03,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:44:03,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:44:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:44:03,710 INFO L87 Difference]: Start difference. First operand 5364 states and 18460 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:44:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:10,711 INFO L93 Difference]: Finished difference Result 10403 states and 33580 transitions. [2022-01-18 06:44:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 06:44:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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 30 [2022-01-18 06:44:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:10,732 INFO L225 Difference]: With dead ends: 10403 [2022-01-18 06:44:10,733 INFO L226 Difference]: Without dead ends: 10349 [2022-01-18 06:44:10,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6035 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2112, Invalid=15180, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 06:44:10,734 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 551 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 3796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:10,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 528 Invalid, 3796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:44:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2022-01-18 06:44:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 5441. [2022-01-18 06:44:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5441 states, 5440 states have (on average 3.4382352941176473) internal successors, (18704), 5440 states have internal predecessors, (18704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5441 states to 5441 states and 18704 transitions. [2022-01-18 06:44:10,889 INFO L78 Accepts]: Start accepts. Automaton has 5441 states and 18704 transitions. Word has length 30 [2022-01-18 06:44:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:10,889 INFO L470 AbstractCegarLoop]: Abstraction has 5441 states and 18704 transitions. [2022-01-18 06:44:10,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 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) [2022-01-18 06:44:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5441 states and 18704 transitions. [2022-01-18 06:44:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:10,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:10,898 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:10,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 06:44:11,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:11,098 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 399924082, now seen corresponding path program 38 times [2022-01-18 06:44:11,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:11,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950440143] [2022-01-18 06:44:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:11,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:11,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:11,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950440143] [2022-01-18 06:44:11,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950440143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:11,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197181256] [2022-01-18 06:44:11,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:44:11,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:11,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:11,492 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) [2022-01-18 06:44:11,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 06:44:11,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:44:11,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:11,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:44:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:11,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:11,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:11,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-01-18 06:44:11,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:11,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 06:44:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:11,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:12,181 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:44:12,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:44:12,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:12,202 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:12,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:44:12,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:12,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:12,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:12,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:44:12,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:12,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:12,525 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:12,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:44:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:12,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197181256] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:12,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:12,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2022-01-18 06:44:12,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781057817] [2022-01-18 06:44:12,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:12,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:44:12,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:44:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:44:12,772 INFO L87 Difference]: Start difference. First operand 5441 states and 18704 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:44:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:17,925 INFO L93 Difference]: Finished difference Result 9661 states and 31427 transitions. [2022-01-18 06:44:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 06:44:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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 30 [2022-01-18 06:44:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:17,946 INFO L225 Difference]: With dead ends: 9661 [2022-01-18 06:44:17,947 INFO L226 Difference]: Without dead ends: 9592 [2022-01-18 06:44:17,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1380, Invalid=9962, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 06:44:17,948 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 554 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:17,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 392 Invalid, 2692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2341 Invalid, 0 Unknown, 105 Unchecked, 1.2s Time] [2022-01-18 06:44:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2022-01-18 06:44:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 5480. [2022-01-18 06:44:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5479 states have (on average 3.436210987406461) internal successors, (18827), 5479 states have internal predecessors, (18827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 18827 transitions. [2022-01-18 06:44:18,095 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 18827 transitions. Word has length 30 [2022-01-18 06:44:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:18,095 INFO L470 AbstractCegarLoop]: Abstraction has 5480 states and 18827 transitions. [2022-01-18 06:44:18,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:44:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 18827 transitions. [2022-01-18 06:44:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:18,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:18,103 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:18,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 06:44:18,304 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,SelfDestructingSolverStorable77 [2022-01-18 06:44:18,304 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2104067314, now seen corresponding path program 39 times [2022-01-18 06:44:18,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:18,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388340298] [2022-01-18 06:44:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:18,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:18,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388340298] [2022-01-18 06:44:18,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388340298] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105281290] [2022-01-18 06:44:18,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:44:18,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:18,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:18,707 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) [2022-01-18 06:44:18,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 06:44:18,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:44:18,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:44:18,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:19,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-01-18 06:44:19,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,128 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2022-01-18 06:44:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:19,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:19,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:19,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:44:19,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,457 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:19,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:44:19,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:19,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:44:19,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:19,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:19,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:44:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:20,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105281290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:20,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:20,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 06:44:20,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997331254] [2022-01-18 06:44:20,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:20,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:44:20,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:44:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:44:20,071 INFO L87 Difference]: Start difference. First operand 5480 states and 18827 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:22,553 INFO L93 Difference]: Finished difference Result 8850 states and 28600 transitions. [2022-01-18 06:44:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:44:22,553 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:44:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:22,574 INFO L225 Difference]: With dead ends: 8850 [2022-01-18 06:44:22,574 INFO L226 Difference]: Without dead ends: 8820 [2022-01-18 06:44:22,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=959, Invalid=4591, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 06:44:22,575 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 465 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 688 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:22,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 278 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1164 Invalid, 0 Unknown, 688 Unchecked, 0.7s Time] [2022-01-18 06:44:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2022-01-18 06:44:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 5516. [2022-01-18 06:44:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5515 states have (on average 3.4357207615593834) internal successors, (18948), 5515 states have internal predecessors, (18948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 18948 transitions. [2022-01-18 06:44:22,683 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 18948 transitions. Word has length 30 [2022-01-18 06:44:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:22,683 INFO L470 AbstractCegarLoop]: Abstraction has 5516 states and 18948 transitions. [2022-01-18 06:44:22,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 18948 transitions. [2022-01-18 06:44:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:22,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:22,691 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:22,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 06:44:22,902 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,SelfDestructingSolverStorable78 [2022-01-18 06:44:22,902 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash -385351846, now seen corresponding path program 40 times [2022-01-18 06:44:22,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633741408] [2022-01-18 06:44:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:22,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:23,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633741408] [2022-01-18 06:44:23,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633741408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604254123] [2022-01-18 06:44:23,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:44:23,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:23,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:23,292 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) [2022-01-18 06:44:23,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 06:44:23,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:44:23,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:23,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:44:23,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:23,597 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:23,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-01-18 06:44:23,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:44:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:23,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:24,000 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:44:24,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:44:24,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:24,023 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:24,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:44:24,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:24,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:24,328 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:24,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:44:24,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:24,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:24,347 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:24,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:44:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:24,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604254123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:24,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:24,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:44:24,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578042301] [2022-01-18 06:44:24,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:24,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:44:24,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:44:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:44:24,606 INFO L87 Difference]: Start difference. First operand 5516 states and 18948 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:44:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:28,318 INFO L93 Difference]: Finished difference Result 10245 states and 33277 transitions. [2022-01-18 06:44:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:44:28,318 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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 30 [2022-01-18 06:44:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:28,373 INFO L225 Difference]: With dead ends: 10245 [2022-01-18 06:44:28,373 INFO L226 Difference]: Without dead ends: 10152 [2022-01-18 06:44:28,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1109, Invalid=6901, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:44:28,373 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 499 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:28,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 512 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1906 Invalid, 0 Unknown, 507 Unchecked, 1.0s Time] [2022-01-18 06:44:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2022-01-18 06:44:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 5505. [2022-01-18 06:44:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5505 states, 5504 states have (on average 3.4353197674418605) internal successors, (18908), 5504 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 18908 transitions. [2022-01-18 06:44:28,490 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 18908 transitions. Word has length 30 [2022-01-18 06:44:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:28,491 INFO L470 AbstractCegarLoop]: Abstraction has 5505 states and 18908 transitions. [2022-01-18 06:44:28,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:44:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 18908 transitions. [2022-01-18 06:44:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:28,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:28,499 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:28,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 06:44:28,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:28,700 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 453798878, now seen corresponding path program 41 times [2022-01-18 06:44:28,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:28,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023080031] [2022-01-18 06:44:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:28,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:29,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:29,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023080031] [2022-01-18 06:44:29,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023080031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:29,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81639152] [2022-01-18 06:44:29,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:44:29,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:29,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:29,015 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) [2022-01-18 06:44:29,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 06:44:29,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:44:29,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:29,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:44:29,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:29,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:29,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:29,326 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:29,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2022-01-18 06:44:29,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:29,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 06:44:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:29,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:29,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:29,718 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:29,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:44:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:29,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:29,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:44:30,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:30,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:30,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:30,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:44:30,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:30,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:30,078 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:30,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:44:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81639152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:30,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 06:44:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615262603] [2022-01-18 06:44:30,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:44:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:44:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:44:30,327 INFO L87 Difference]: Start difference. First operand 5505 states and 18908 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:34,091 INFO L93 Difference]: Finished difference Result 9408 states and 30262 transitions. [2022-01-18 06:44:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:44:34,091 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:44:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:34,110 INFO L225 Difference]: With dead ends: 9408 [2022-01-18 06:44:34,111 INFO L226 Difference]: Without dead ends: 9330 [2022-01-18 06:44:34,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=958, Invalid=6014, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:44:34,112 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 445 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:34,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 494 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2340 Invalid, 0 Unknown, 462 Unchecked, 1.2s Time] [2022-01-18 06:44:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9330 states. [2022-01-18 06:44:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9330 to 5513. [2022-01-18 06:44:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 5512 states have (on average 3.434687953555878) internal successors, (18932), 5512 states have internal predecessors, (18932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 18932 transitions. [2022-01-18 06:44:34,230 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 18932 transitions. Word has length 30 [2022-01-18 06:44:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:34,230 INFO L470 AbstractCegarLoop]: Abstraction has 5513 states and 18932 transitions. [2022-01-18 06:44:34,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 18932 transitions. [2022-01-18 06:44:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:34,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:34,239 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:44:34,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 06:44:34,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:34,439 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash 510504110, now seen corresponding path program 42 times [2022-01-18 06:44:34,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:34,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038473680] [2022-01-18 06:44:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:34,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:34,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038473680] [2022-01-18 06:44:34,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038473680] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157943033] [2022-01-18 06:44:34,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:44:34,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:34,792 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) [2022-01-18 06:44:34,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 06:44:34,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:44:34,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:34,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:44:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:35,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:35,114 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:35,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2022-01-18 06:44:35,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-18 06:44:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:35,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:35,526 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:44:35,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:44:35,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:35,550 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:35,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:44:35,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:35,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:35,839 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:35,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:44:35,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:35,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:35,859 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:35,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:44:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:36,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157943033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:36,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:36,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2022-01-18 06:44:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957802493] [2022-01-18 06:44:36,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:36,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:44:36,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:44:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:44:36,073 INFO L87 Difference]: Start difference. First operand 5513 states and 18932 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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) [2022-01-18 06:44:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:41,088 INFO L93 Difference]: Finished difference Result 10189 states and 33046 transitions. [2022-01-18 06:44:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 06:44:41,089 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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 30 [2022-01-18 06:44:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:41,111 INFO L225 Difference]: With dead ends: 10189 [2022-01-18 06:44:41,111 INFO L226 Difference]: Without dead ends: 10093 [2022-01-18 06:44:41,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3046 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1243, Invalid=8857, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 06:44:41,112 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 520 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 481 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:41,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 924 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3438 Invalid, 0 Unknown, 481 Unchecked, 1.7s Time] [2022-01-18 06:44:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2022-01-18 06:44:41,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 5505. [2022-01-18 06:44:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5505 states, 5504 states have (on average 3.4353197674418605) internal successors, (18908), 5504 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 18908 transitions. [2022-01-18 06:44:41,247 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 18908 transitions. Word has length 30 [2022-01-18 06:44:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:41,247 INFO L470 AbstractCegarLoop]: Abstraction has 5505 states and 18908 transitions. [2022-01-18 06:44:41,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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) [2022-01-18 06:44:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 18908 transitions. [2022-01-18 06:44:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:41,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:41,276 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] [2022-01-18 06:44:41,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 06:44:41,477 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,SelfDestructingSolverStorable81 [2022-01-18 06:44:41,477 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash 330856445, now seen corresponding path program 38 times [2022-01-18 06:44:41,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533139617] [2022-01-18 06:44:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:41,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:41,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533139617] [2022-01-18 06:44:41,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533139617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:41,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213377888] [2022-01-18 06:44:41,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:44:41,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:41,888 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) [2022-01-18 06:44:41,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 06:44:41,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:44:41,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:41,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 06:44:41,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:42,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:42,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-01-18 06:44:42,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:42,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-18 06:44:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:42,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:42,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:42,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 56 [2022-01-18 06:44:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,720 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:42,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 44 [2022-01-18 06:44:42,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:42,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:44:42,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:42,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:42,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:44:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213377888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:42,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:42,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-01-18 06:44:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506491032] [2022-01-18 06:44:42,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:42,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:44:42,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:44:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:44:42,854 INFO L87 Difference]: Start difference. First operand 5505 states and 18908 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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) [2022-01-18 06:44:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:49,115 INFO L93 Difference]: Finished difference Result 10065 states and 32925 transitions. [2022-01-18 06:44:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-18 06:44:49,116 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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 30 [2022-01-18 06:44:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:49,137 INFO L225 Difference]: With dead ends: 10065 [2022-01-18 06:44:49,137 INFO L226 Difference]: Without dead ends: 9949 [2022-01-18 06:44:49,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6811 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2468, Invalid=15622, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 06:44:49,139 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 554 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:49,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 681 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:44:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2022-01-18 06:44:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5556. [2022-01-18 06:44:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5555 states have (on average 3.4333033303330334) internal successors, (19072), 5555 states have internal predecessors, (19072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 19072 transitions. [2022-01-18 06:44:49,284 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 19072 transitions. Word has length 30 [2022-01-18 06:44:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 19072 transitions. [2022-01-18 06:44:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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) [2022-01-18 06:44:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 19072 transitions. [2022-01-18 06:44:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:49,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:49,293 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] [2022-01-18 06:44:49,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 06:44:49,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:49,493 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1561065469, now seen corresponding path program 39 times [2022-01-18 06:44:49,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:49,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880047459] [2022-01-18 06:44:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:49,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:49,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880047459] [2022-01-18 06:44:49,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880047459] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758669333] [2022-01-18 06:44:49,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:44:49,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:49,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:49,853 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) [2022-01-18 06:44:49,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 06:44:49,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:44:49,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:49,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:44:49,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:50,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,227 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:50,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 65 [2022-01-18 06:44:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,241 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:50,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 75 [2022-01-18 06:44:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:50,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:50,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:50,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 43 [2022-01-18 06:44:50,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:50,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:50,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:50,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 7 [2022-01-18 06:44:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:50,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758669333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:50,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:50,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 36 [2022-01-18 06:44:50,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815840560] [2022-01-18 06:44:50,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:50,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:44:50,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:44:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:44:50,985 INFO L87 Difference]: Start difference. First operand 5556 states and 19072 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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) [2022-01-18 06:44:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:44:56,838 INFO L93 Difference]: Finished difference Result 10415 states and 33999 transitions. [2022-01-18 06:44:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 06:44:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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 30 [2022-01-18 06:44:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:44:56,860 INFO L225 Difference]: With dead ends: 10415 [2022-01-18 06:44:56,861 INFO L226 Difference]: Without dead ends: 10290 [2022-01-18 06:44:56,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4383 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1653, Invalid=12867, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 06:44:56,862 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 518 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 4601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1218 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:44:56,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1036 Invalid, 4601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3217 Invalid, 0 Unknown, 1218 Unchecked, 1.5s Time] [2022-01-18 06:44:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2022-01-18 06:44:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 5927. [2022-01-18 06:44:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5927 states, 5926 states have (on average 3.4206884913938578) internal successors, (20271), 5926 states have internal predecessors, (20271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:44:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5927 states to 5927 states and 20271 transitions. [2022-01-18 06:44:57,019 INFO L78 Accepts]: Start accepts. Automaton has 5927 states and 20271 transitions. Word has length 30 [2022-01-18 06:44:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:44:57,019 INFO L470 AbstractCegarLoop]: Abstraction has 5927 states and 20271 transitions. [2022-01-18 06:44:57,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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) [2022-01-18 06:44:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5927 states and 20271 transitions. [2022-01-18 06:44:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:44:57,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:44:57,028 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] [2022-01-18 06:44:57,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 06:44:57,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:57,236 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:44:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:44:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1598828051, now seen corresponding path program 40 times [2022-01-18 06:44:57,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:44:57,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260523013] [2022-01-18 06:44:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:44:57,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:44:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:44:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:57,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:44:57,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260523013] [2022-01-18 06:44:57,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260523013] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:44:57,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726621977] [2022-01-18 06:44:57,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:44:57,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:44:57,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:44:57,624 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) [2022-01-18 06:44:57,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 06:44:57,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:44:57,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:44:57,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:44:57,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:44:58,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:58,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-01-18 06:44:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:58,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 3 [2022-01-18 06:44:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:58,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:44:58,333 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:44:58,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:44:58,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,351 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:44:58,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:44:58,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:58,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:44:58,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:44:58,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:44:58,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:44:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:44:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726621977] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:44:58,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:44:58,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2022-01-18 06:44:58,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007631592] [2022-01-18 06:44:58,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:44:58,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:44:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:44:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:44:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:44:58,542 INFO L87 Difference]: Start difference. First operand 5927 states and 20271 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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) [2022-01-18 06:45:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:03,687 INFO L93 Difference]: Finished difference Result 9568 states and 31970 transitions. [2022-01-18 06:45:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 06:45:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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 30 [2022-01-18 06:45:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:03,708 INFO L225 Difference]: With dead ends: 9568 [2022-01-18 06:45:03,709 INFO L226 Difference]: Without dead ends: 9535 [2022-01-18 06:45:03,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3977 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1488, Invalid=10502, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 06:45:03,710 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 406 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:03,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 492 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2677 Invalid, 0 Unknown, 98 Unchecked, 1.3s Time] [2022-01-18 06:45:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2022-01-18 06:45:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 5943. [2022-01-18 06:45:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5943 states, 5942 states have (on average 3.418209357118815) internal successors, (20311), 5942 states have internal predecessors, (20311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5943 states to 5943 states and 20311 transitions. [2022-01-18 06:45:03,860 INFO L78 Accepts]: Start accepts. Automaton has 5943 states and 20311 transitions. Word has length 30 [2022-01-18 06:45:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:03,860 INFO L470 AbstractCegarLoop]: Abstraction has 5943 states and 20311 transitions. [2022-01-18 06:45:03,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 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) [2022-01-18 06:45:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5943 states and 20311 transitions. [2022-01-18 06:45:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:03,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:03,869 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] [2022-01-18 06:45:03,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 06:45:04,070 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,SelfDestructingSolverStorable84 [2022-01-18 06:45:04,070 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1121423259, now seen corresponding path program 41 times [2022-01-18 06:45:04,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:04,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969705435] [2022-01-18 06:45:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:04,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:04,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:04,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969705435] [2022-01-18 06:45:04,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969705435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:04,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799408689] [2022-01-18 06:45:04,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:45:04,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:04,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:04,409 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) [2022-01-18 06:45:04,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 06:45:04,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:45:04,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:45:04,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:45:04,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:04,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:04,822 INFO L353 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2022-01-18 06:45:04,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 198 treesize of output 164 [2022-01-18 06:45:04,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:04,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:04,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:04,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 8 [2022-01-18 06:45:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:04,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:05,107 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:45:05,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:45:05,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,125 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:05,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:45:05,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:05,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:45:05,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:05,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:05,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:45:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:05,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799408689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:05,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:05,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-01-18 06:45:05,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031667778] [2022-01-18 06:45:05,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:05,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:45:05,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:45:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:45:05,320 INFO L87 Difference]: Start difference. First operand 5943 states and 20311 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 06:45:09,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:09,419 INFO L93 Difference]: Finished difference Result 9113 states and 30304 transitions. [2022-01-18 06:45:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:45:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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 30 [2022-01-18 06:45:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:09,439 INFO L225 Difference]: With dead ends: 9113 [2022-01-18 06:45:09,439 INFO L226 Difference]: Without dead ends: 9066 [2022-01-18 06:45:09,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1020, Invalid=6990, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:45:09,440 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 344 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:09,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 479 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 06:45:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2022-01-18 06:45:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 5977. [2022-01-18 06:45:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 5976 states have (on average 3.4129852744310574) internal successors, (20396), 5976 states have internal predecessors, (20396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 20396 transitions. [2022-01-18 06:45:09,563 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 20396 transitions. Word has length 30 [2022-01-18 06:45:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:09,563 INFO L470 AbstractCegarLoop]: Abstraction has 5977 states and 20396 transitions. [2022-01-18 06:45:09,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 31 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) [2022-01-18 06:45:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 20396 transitions. [2022-01-18 06:45:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:09,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:09,573 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:45:09,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 06:45:09,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:09,774 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 333797096, now seen corresponding path program 43 times [2022-01-18 06:45:09,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908346564] [2022-01-18 06:45:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:09,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:10,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:10,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908346564] [2022-01-18 06:45:10,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908346564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:10,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837837436] [2022-01-18 06:45:10,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:45:10,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:10,127 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) [2022-01-18 06:45:10,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 06:45:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:45:10,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:10,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:10,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:10,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2022-01-18 06:45:10,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:10,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:10,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 06:45:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:10,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:10,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:10,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:10,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:45:10,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:10,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:10,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:45:11,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:11,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:11,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:11,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:45:11,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:11,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:11,205 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:11,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:45:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:11,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837837436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:11,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:11,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 33 [2022-01-18 06:45:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399679122] [2022-01-18 06:45:11,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:11,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:45:11,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:45:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:45:11,425 INFO L87 Difference]: Start difference. First operand 5977 states and 20396 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:45:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:16,894 INFO L93 Difference]: Finished difference Result 13365 states and 41408 transitions. [2022-01-18 06:45:16,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 06:45:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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 30 [2022-01-18 06:45:16,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:16,923 INFO L225 Difference]: With dead ends: 13365 [2022-01-18 06:45:16,924 INFO L226 Difference]: Without dead ends: 13335 [2022-01-18 06:45:16,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4639 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2494, Invalid=9716, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 06:45:16,925 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 792 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:16,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 547 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2279 Invalid, 0 Unknown, 92 Unchecked, 1.3s Time] [2022-01-18 06:45:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13335 states. [2022-01-18 06:45:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13335 to 6037. [2022-01-18 06:45:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 6036 states have (on average 3.421139827700464) internal successors, (20650), 6036 states have internal predecessors, (20650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 20650 transitions. [2022-01-18 06:45:17,097 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 20650 transitions. Word has length 30 [2022-01-18 06:45:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:17,097 INFO L470 AbstractCegarLoop]: Abstraction has 6037 states and 20650 transitions. [2022-01-18 06:45:17,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 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) [2022-01-18 06:45:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 20650 transitions. [2022-01-18 06:45:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:17,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:17,106 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:45:17,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-18 06:45:17,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:17,307 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1359796828, now seen corresponding path program 44 times [2022-01-18 06:45:17,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:17,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334542820] [2022-01-18 06:45:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:17,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:17,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:17,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334542820] [2022-01-18 06:45:17,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334542820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:17,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96820888] [2022-01-18 06:45:17,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:45:17,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:17,666 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) [2022-01-18 06:45:17,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 06:45:17,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:45:17,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:45:17,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:45:17,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:17,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:17,955 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:17,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-01-18 06:45:17,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-01-18 06:45:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:18,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:18,363 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 06:45:18,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:45:18,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:18,388 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:18,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:45:18,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:18,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:18,683 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:18,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:45:18,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:18,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:18,703 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:18,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:45:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:18,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96820888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:18,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:18,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2022-01-18 06:45:18,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891137670] [2022-01-18 06:45:18,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:18,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:45:18,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:45:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:45:18,926 INFO L87 Difference]: Start difference. First operand 6037 states and 20650 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:45:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:28,883 INFO L93 Difference]: Finished difference Result 12809 states and 39880 transitions. [2022-01-18 06:45:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 06:45:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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 30 [2022-01-18 06:45:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:28,912 INFO L225 Difference]: With dead ends: 12809 [2022-01-18 06:45:28,912 INFO L226 Difference]: Without dead ends: 12750 [2022-01-18 06:45:28,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10503 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3385, Invalid=23347, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 06:45:28,914 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 700 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:28,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 797 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2597 Invalid, 0 Unknown, 381 Unchecked, 1.5s Time] [2022-01-18 06:45:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12750 states. [2022-01-18 06:45:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12750 to 6136. [2022-01-18 06:45:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 3.4293398533007333) internal successors, (21039), 6135 states have internal predecessors, (21039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21039 transitions. [2022-01-18 06:45:29,106 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21039 transitions. Word has length 30 [2022-01-18 06:45:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:29,106 INFO L470 AbstractCegarLoop]: Abstraction has 6136 states and 21039 transitions. [2022-01-18 06:45:29,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 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) [2022-01-18 06:45:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21039 transitions. [2022-01-18 06:45:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:29,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:29,115 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:45:29,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 06:45:29,315 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,SelfDestructingSolverStorable87 [2022-01-18 06:45:29,316 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:29,316 INFO L85 PathProgramCache]: Analyzing trace with hash 445751308, now seen corresponding path program 45 times [2022-01-18 06:45:29,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:29,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182897178] [2022-01-18 06:45:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:29,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:29,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:29,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182897178] [2022-01-18 06:45:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182897178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:29,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41733013] [2022-01-18 06:45:29,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:45:29,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:29,651 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) [2022-01-18 06:45:29,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 06:45:29,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:45:29,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:45:29,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:45:29,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:30,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:30,011 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:30,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2022-01-18 06:45:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:30,023 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:30,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 52 [2022-01-18 06:45:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:30,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:30,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:30,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 93 [2022-01-18 06:45:30,508 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:30,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-01-18 06:45:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:31,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41733013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:31,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:31,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 06:45:31,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020587841] [2022-01-18 06:45:31,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:31,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:45:31,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:45:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:45:31,769 INFO L87 Difference]: Start difference. First operand 6136 states and 21039 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:40,785 INFO L93 Difference]: Finished difference Result 14192 states and 43942 transitions. [2022-01-18 06:45:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-18 06:45:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:45:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:40,818 INFO L225 Difference]: With dead ends: 14192 [2022-01-18 06:45:40,818 INFO L226 Difference]: Without dead ends: 14143 [2022-01-18 06:45:40,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9695 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=4123, Invalid=18527, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 06:45:40,820 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 973 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1502 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:40,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 666 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1887 Invalid, 0 Unknown, 1502 Unchecked, 1.2s Time] [2022-01-18 06:45:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14143 states. [2022-01-18 06:45:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14143 to 6117. [2022-01-18 06:45:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 6116 states have (on average 3.4270765206017004) internal successors, (20960), 6116 states have internal predecessors, (20960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 20960 transitions. [2022-01-18 06:45:41,014 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 20960 transitions. Word has length 30 [2022-01-18 06:45:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:41,014 INFO L470 AbstractCegarLoop]: Abstraction has 6117 states and 20960 transitions. [2022-01-18 06:45:41,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 20960 transitions. [2022-01-18 06:45:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:41,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:41,023 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] [2022-01-18 06:45:41,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 06:45:41,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:41,224 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash 276304091, now seen corresponding path program 42 times [2022-01-18 06:45:41,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:41,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467868392] [2022-01-18 06:45:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:41,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:41,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467868392] [2022-01-18 06:45:41,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467868392] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794904573] [2022-01-18 06:45:41,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:45:41,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:41,615 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) [2022-01-18 06:45:41,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 06:45:41,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:45:41,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:45:41,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:45:41,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:42,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2022-01-18 06:45:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:42,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-18 06:45:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:42,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:42,303 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:45:42,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:45:42,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:42,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:45:42,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:42,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:45:42,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:42,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:42,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:45:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:42,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794904573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:42,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:42,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 06:45:42,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558648761] [2022-01-18 06:45:42,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:42,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:45:42,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:45:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:45:42,506 INFO L87 Difference]: Start difference. First operand 6117 states and 20960 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:53,121 INFO L93 Difference]: Finished difference Result 11983 states and 39131 transitions. [2022-01-18 06:45:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-18 06:45:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:45:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:53,146 INFO L225 Difference]: With dead ends: 11983 [2022-01-18 06:45:53,146 INFO L226 Difference]: Without dead ends: 11868 [2022-01-18 06:45:53,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11971 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4245, Invalid=25857, Unknown=0, NotChecked=0, Total=30102 [2022-01-18 06:45:53,147 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 799 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:53,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 624 Invalid, 3929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 06:45:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2022-01-18 06:45:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 6146. [2022-01-18 06:45:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 3.4318958502847843) internal successors, (21089), 6145 states have internal predecessors, (21089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21089 transitions. [2022-01-18 06:45:53,292 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21089 transitions. Word has length 30 [2022-01-18 06:45:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:53,292 INFO L470 AbstractCegarLoop]: Abstraction has 6146 states and 21089 transitions. [2022-01-18 06:45:53,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21089 transitions. [2022-01-18 06:45:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:53,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:53,302 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] [2022-01-18 06:45:53,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 06:45:53,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:53,502 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1022527905, now seen corresponding path program 43 times [2022-01-18 06:45:53,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:53,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825620184] [2022-01-18 06:45:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:53,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:53,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:45:53,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825620184] [2022-01-18 06:45:53,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825620184] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:45:53,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533268896] [2022-01-18 06:45:53,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:45:53,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:45:53,876 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) [2022-01-18 06:45:53,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 06:45:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:45:53,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:45:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:45:54,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:54,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-01-18 06:45:54,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:54,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 3 [2022-01-18 06:45:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:54,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:45:54,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:54,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:45:54,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,625 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:45:54,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:45:54,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:54,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:45:54,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:45:54,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:45:54,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:45:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:45:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533268896] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:45:54,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:45:54,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 35 [2022-01-18 06:45:54,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950253449] [2022-01-18 06:45:54,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:45:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:45:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:45:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:45:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:45:54,747 INFO L87 Difference]: Start difference. First operand 6146 states and 21089 transitions. Second operand has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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) [2022-01-18 06:45:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:45:59,560 INFO L93 Difference]: Finished difference Result 12366 states and 40150 transitions. [2022-01-18 06:45:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 06:45:59,560 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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 30 [2022-01-18 06:45:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:45:59,583 INFO L225 Difference]: With dead ends: 12366 [2022-01-18 06:45:59,583 INFO L226 Difference]: Without dead ends: 12265 [2022-01-18 06:45:59,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1942, Invalid=11168, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 06:45:59,584 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 585 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:45:59,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1317 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:45:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12265 states. [2022-01-18 06:45:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12265 to 6537. [2022-01-18 06:45:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6537 states, 6536 states have (on average 3.429620563035496) internal successors, (22416), 6536 states have internal predecessors, (22416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:45:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6537 states to 6537 states and 22416 transitions. [2022-01-18 06:45:59,731 INFO L78 Accepts]: Start accepts. Automaton has 6537 states and 22416 transitions. Word has length 30 [2022-01-18 06:45:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:45:59,731 INFO L470 AbstractCegarLoop]: Abstraction has 6537 states and 22416 transitions. [2022-01-18 06:45:59,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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) [2022-01-18 06:45:59,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6537 states and 22416 transitions. [2022-01-18 06:45:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:45:59,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:45:59,741 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] [2022-01-18 06:45:59,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 06:45:59,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:45:59,942 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:45:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:45:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 750579931, now seen corresponding path program 44 times [2022-01-18 06:45:59,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:45:59,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605210458] [2022-01-18 06:45:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:45:59,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:45:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:46:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:00,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:46:00,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605210458] [2022-01-18 06:46:00,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605210458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:46:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029801170] [2022-01-18 06:46:00,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:46:00,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:46:00,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:46:00,243 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) [2022-01-18 06:46:00,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 06:46:00,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:46:00,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:46:00,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 06:46:00,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:46:00,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,618 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:00,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 60 [2022-01-18 06:46:00,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:00,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:00,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 88 [2022-01-18 06:46:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:00,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:46:01,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,205 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:01,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:46:01,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:01,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:46:01,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:01,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:46:01,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:01,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:01,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:46:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:01,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029801170] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:46:01,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:46:01,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2022-01-18 06:46:01,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113469447] [2022-01-18 06:46:01,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:46:01,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:46:01,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:46:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:46:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:46:01,364 INFO L87 Difference]: Start difference. First operand 6537 states and 22416 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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) [2022-01-18 06:46:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:46:47,785 INFO L93 Difference]: Finished difference Result 23266 states and 73315 transitions. [2022-01-18 06:46:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 466 states. [2022-01-18 06:46:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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 30 [2022-01-18 06:46:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:46:47,839 INFO L225 Difference]: With dead ends: 23266 [2022-01-18 06:46:47,840 INFO L226 Difference]: Without dead ends: 23000 [2022-01-18 06:46:47,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116960 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=34708, Invalid=210812, Unknown=0, NotChecked=0, Total=245520 [2022-01-18 06:46:47,849 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1936 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 6909 mSolverCounterSat, 1132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 10809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1132 IncrementalHoareTripleChecker+Valid, 6909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2768 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:46:47,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 1911 Invalid, 10809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1132 Valid, 6909 Invalid, 0 Unknown, 2768 Unchecked, 4.5s Time] [2022-01-18 06:46:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23000 states. [2022-01-18 06:46:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23000 to 7230. [2022-01-18 06:46:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7229 states have (on average 3.460229630654309) internal successors, (25014), 7229 states have internal predecessors, (25014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:46:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 25014 transitions. [2022-01-18 06:46:48,135 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 25014 transitions. Word has length 30 [2022-01-18 06:46:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:46:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 25014 transitions. [2022-01-18 06:46:48,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 38 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) [2022-01-18 06:46:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 25014 transitions. [2022-01-18 06:46:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:46:48,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:46:48,147 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:46:48,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 06:46:48,347 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,SelfDestructingSolverStorable91 [2022-01-18 06:46:48,348 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:46:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:46:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1836105554, now seen corresponding path program 46 times [2022-01-18 06:46:48,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:46:48,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327730571] [2022-01-18 06:46:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:46:48,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:46:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:46:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:48,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:46:48,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327730571] [2022-01-18 06:46:48,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327730571] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:46:48,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181568149] [2022-01-18 06:46:48,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:46:48,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:46:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:46:48,679 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) [2022-01-18 06:46:48,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 06:46:48,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:46:48,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:46:48,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:46:48,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:46:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:49,088 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-01-18 06:46:49,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:49,094 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 26 [2022-01-18 06:46:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:49,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:46:49,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:46:49,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:46:49,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,758 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:46:49,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:49,777 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:49,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:46:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:50,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181568149] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:46:50,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:46:50,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 32 [2022-01-18 06:46:50,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191912457] [2022-01-18 06:46:50,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:46:50,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:46:50,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:46:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:46:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:46:50,005 INFO L87 Difference]: Start difference. First operand 7230 states and 25014 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:46:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:46:56,568 INFO L93 Difference]: Finished difference Result 13524 states and 43551 transitions. [2022-01-18 06:46:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-18 06:46:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:46:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:46:56,599 INFO L225 Difference]: With dead ends: 13524 [2022-01-18 06:46:56,599 INFO L226 Difference]: Without dead ends: 13490 [2022-01-18 06:46:56,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5645 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2566, Invalid=12196, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 06:46:56,600 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 830 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 609 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:46:56,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 521 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2298 Invalid, 0 Unknown, 609 Unchecked, 1.3s Time] [2022-01-18 06:46:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13490 states. [2022-01-18 06:46:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13490 to 7248. [2022-01-18 06:46:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 3.4600524354905478) internal successors, (25075), 7247 states have internal predecessors, (25075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:46:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 25075 transitions. [2022-01-18 06:46:56,858 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 25075 transitions. Word has length 30 [2022-01-18 06:46:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:46:56,858 INFO L470 AbstractCegarLoop]: Abstraction has 7248 states and 25075 transitions. [2022-01-18 06:46:56,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:46:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 25075 transitions. [2022-01-18 06:46:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:46:56,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:46:56,870 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:46:56,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 06:46:57,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:46:57,070 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:46:57,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:46:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1822394888, now seen corresponding path program 47 times [2022-01-18 06:46:57,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:46:57,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567532901] [2022-01-18 06:46:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:46:57,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:46:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:46:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:57,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:46:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567532901] [2022-01-18 06:46:57,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567532901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:46:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388316961] [2022-01-18 06:46:57,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:46:57,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:46:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:46:57,468 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) [2022-01-18 06:46:57,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 06:46:57,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:46:57,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:46:57,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:46:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:46:57,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:46:57,795 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:57,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2022-01-18 06:46:57,800 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:57,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 06:46:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:57,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:46:58,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:58,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:46:58,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:58,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:46:58,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,478 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:58,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:46:58,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:46:58,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:46:58,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:46:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:46:58,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388316961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:46:58,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:46:58,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 06:46:58,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061608166] [2022-01-18 06:46:58,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:46:58,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:46:58,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:46:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:46:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:46:58,735 INFO L87 Difference]: Start difference. First operand 7248 states and 25075 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:47:08,659 INFO L93 Difference]: Finished difference Result 18143 states and 57239 transitions. [2022-01-18 06:47:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-18 06:47:08,660 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:47:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:47:08,701 INFO L225 Difference]: With dead ends: 18143 [2022-01-18 06:47:08,701 INFO L226 Difference]: Without dead ends: 17978 [2022-01-18 06:47:08,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11077 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3738, Invalid=22344, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 06:47:08,703 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 771 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1177 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:47:08,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 705 Invalid, 4000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2581 Invalid, 0 Unknown, 1177 Unchecked, 1.5s Time] [2022-01-18 06:47:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17978 states. [2022-01-18 06:47:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17978 to 7278. [2022-01-18 06:47:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 7277 states have (on average 3.4595300261096606) internal successors, (25175), 7277 states have internal predecessors, (25175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 25175 transitions. [2022-01-18 06:47:08,971 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 25175 transitions. Word has length 30 [2022-01-18 06:47:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:47:08,971 INFO L470 AbstractCegarLoop]: Abstraction has 7278 states and 25175 transitions. [2022-01-18 06:47:08,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 25175 transitions. [2022-01-18 06:47:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:47:08,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:47:08,983 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] [2022-01-18 06:47:08,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 06:47:09,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:09,184 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:47:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:47:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1876694929, now seen corresponding path program 45 times [2022-01-18 06:47:09,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:47:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721525675] [2022-01-18 06:47:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:47:09,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:47:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:09,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:47:09,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721525675] [2022-01-18 06:47:09,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721525675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:47:09,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630590796] [2022-01-18 06:47:09,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:47:09,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:47:09,540 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) [2022-01-18 06:47:09,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 06:47:09,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:47:09,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:47:09,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:47:09,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:47:09,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:09,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:09,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 61 [2022-01-18 06:47:09,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:09,844 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:09,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 103 [2022-01-18 06:47:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:10,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:47:10,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:10,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:10,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:10,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:10,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 44 [2022-01-18 06:47:10,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:10,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:10,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-01-18 06:47:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:10,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630590796] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:47:10,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:47:10,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 37 [2022-01-18 06:47:10,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705782155] [2022-01-18 06:47:10,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:47:10,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:47:10,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:47:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:47:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:47:10,759 INFO L87 Difference]: Start difference. First operand 7278 states and 25175 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 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) [2022-01-18 06:47:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:47:15,431 INFO L93 Difference]: Finished difference Result 10861 states and 36289 transitions. [2022-01-18 06:47:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 06:47:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 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 30 [2022-01-18 06:47:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:47:15,454 INFO L225 Difference]: With dead ends: 10861 [2022-01-18 06:47:15,454 INFO L226 Difference]: Without dead ends: 10816 [2022-01-18 06:47:15,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3219 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1387, Invalid=9533, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 06:47:15,455 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 550 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:47:15,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1018 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2974 Invalid, 0 Unknown, 584 Unchecked, 1.4s Time] [2022-01-18 06:47:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10816 states. [2022-01-18 06:47:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10816 to 7318. [2022-01-18 06:47:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7317 states have (on average 3.4601612682793497) internal successors, (25318), 7317 states have internal predecessors, (25318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 25318 transitions. [2022-01-18 06:47:15,618 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 25318 transitions. Word has length 30 [2022-01-18 06:47:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:47:15,618 INFO L470 AbstractCegarLoop]: Abstraction has 7318 states and 25318 transitions. [2022-01-18 06:47:15,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 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) [2022-01-18 06:47:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 25318 transitions. [2022-01-18 06:47:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:47:15,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:47:15,630 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] [2022-01-18 06:47:15,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 06:47:15,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:15,831 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:47:15,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:47:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2016344273, now seen corresponding path program 46 times [2022-01-18 06:47:15,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:47:15,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605950724] [2022-01-18 06:47:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:47:15,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:47:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:16,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:47:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605950724] [2022-01-18 06:47:16,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605950724] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:47:16,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223666405] [2022-01-18 06:47:16,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:47:16,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:16,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:47:16,195 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) [2022-01-18 06:47:16,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 06:47:16,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:47:16,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:47:16,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:47:16,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:47:16,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:16,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:16,486 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:16,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-01-18 06:47:16,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:16,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:16,502 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:16,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 79 [2022-01-18 06:47:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:16,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:47:16,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:16,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:16,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,000 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:17,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:47:17,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,014 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:17,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:47:17,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:17,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:47:17,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:17,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:17,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:47:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223666405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:47:17,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:47:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 33 [2022-01-18 06:47:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732825780] [2022-01-18 06:47:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:47:17,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:47:17,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:47:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:47:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:47:17,141 INFO L87 Difference]: Start difference. First operand 7318 states and 25318 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:47:22,237 INFO L93 Difference]: Finished difference Result 12931 states and 42701 transitions. [2022-01-18 06:47:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 06:47:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:47:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:47:22,267 INFO L225 Difference]: With dead ends: 12931 [2022-01-18 06:47:22,267 INFO L226 Difference]: Without dead ends: 12831 [2022-01-18 06:47:22,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4112 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1835, Invalid=10821, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 06:47:22,268 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 681 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3761 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:47:22,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1309 Invalid, 3998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 3761 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:47:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2022-01-18 06:47:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 7438. [2022-01-18 06:47:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7438 states, 7437 states have (on average 3.4599973107435793) internal successors, (25732), 7437 states have internal predecessors, (25732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 25732 transitions. [2022-01-18 06:47:22,450 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 25732 transitions. Word has length 30 [2022-01-18 06:47:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:47:22,450 INFO L470 AbstractCegarLoop]: Abstraction has 7438 states and 25732 transitions. [2022-01-18 06:47:22,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 25732 transitions. [2022-01-18 06:47:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:47:22,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:47:22,462 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:47:22,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 06:47:22,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:22,663 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:47:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:47:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1105977056, now seen corresponding path program 48 times [2022-01-18 06:47:22,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:47:22,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158294599] [2022-01-18 06:47:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:47:22,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:47:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:22,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:47:22,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158294599] [2022-01-18 06:47:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158294599] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:47:22,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48655813] [2022-01-18 06:47:22,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:47:22,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:47:22,985 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) [2022-01-18 06:47:22,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 06:47:23,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 06:47:23,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:47:23,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:47:23,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:47:23,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:23,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 44 [2022-01-18 06:47:23,363 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:23,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 52 [2022-01-18 06:47:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:23,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:47:23,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:23,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:24,000 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:24,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:47:24,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:24,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:24,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:24,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:47:24,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:24,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-01-18 06:47:24,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:24,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-01-18 06:47:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:24,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48655813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:47:24,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:47:24,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2022-01-18 06:47:24,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414697817] [2022-01-18 06:47:24,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:47:24,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:47:24,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:47:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:47:24,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:47:24,209 INFO L87 Difference]: Start difference. First operand 7438 states and 25732 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:47:46,962 INFO L93 Difference]: Finished difference Result 16526 states and 54365 transitions. [2022-01-18 06:47:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-01-18 06:47:46,962 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:47:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:47:47,000 INFO L225 Difference]: With dead ends: 16526 [2022-01-18 06:47:47,000 INFO L226 Difference]: Without dead ends: 16473 [2022-01-18 06:47:47,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31631 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=9136, Invalid=63494, Unknown=0, NotChecked=0, Total=72630 [2022-01-18 06:47:47,002 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 1211 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1240 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:47:47,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 1079 Invalid, 5362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3656 Invalid, 0 Unknown, 1240 Unchecked, 2.3s Time] [2022-01-18 06:47:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16473 states. [2022-01-18 06:47:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16473 to 7514. [2022-01-18 06:47:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 3.4654598695594303) internal successors, (26036), 7513 states have internal predecessors, (26036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 26036 transitions. [2022-01-18 06:47:47,223 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 26036 transitions. Word has length 30 [2022-01-18 06:47:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:47:47,223 INFO L470 AbstractCegarLoop]: Abstraction has 7514 states and 26036 transitions. [2022-01-18 06:47:47,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 26036 transitions. [2022-01-18 06:47:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:47:47,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:47:47,235 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:47:47,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 06:47:47,435 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,SelfDestructingSolverStorable96 [2022-01-18 06:47:47,436 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:47:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:47:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1637830820, now seen corresponding path program 49 times [2022-01-18 06:47:47,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:47:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292821505] [2022-01-18 06:47:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:47:47,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:47:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:47,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:47:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292821505] [2022-01-18 06:47:47,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292821505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:47:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215948767] [2022-01-18 06:47:47,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:47:47,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:47,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:47:47,754 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) [2022-01-18 06:47:47,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 06:47:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:47,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:47:47,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:47:48,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:48,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-01-18 06:47:48,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:47:48,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 3 [2022-01-18 06:47:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:48,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:47:48,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:48,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 69 [2022-01-18 06:47:48,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,502 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:48,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 59 [2022-01-18 06:47:48,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,854 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:48,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 60 [2022-01-18 06:47:48,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:48,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:48,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 50 [2022-01-18 06:47:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:49,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215948767] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:47:49,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:47:49,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 33 [2022-01-18 06:47:49,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695217341] [2022-01-18 06:47:49,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:47:49,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:47:49,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:47:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:47:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:47:49,111 INFO L87 Difference]: Start difference. First operand 7514 states and 26036 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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) [2022-01-18 06:47:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:47:54,116 INFO L93 Difference]: Finished difference Result 12709 states and 41187 transitions. [2022-01-18 06:47:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 06:47:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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 30 [2022-01-18 06:47:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:47:54,146 INFO L225 Difference]: With dead ends: 12709 [2022-01-18 06:47:54,146 INFO L226 Difference]: Without dead ends: 12679 [2022-01-18 06:47:54,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4444 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1978, Invalid=10012, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 06:47:54,148 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 489 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 593 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:47:54,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 502 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1962 Invalid, 0 Unknown, 593 Unchecked, 1.1s Time] [2022-01-18 06:47:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12679 states. [2022-01-18 06:47:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12679 to 7518. [2022-01-18 06:47:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 7517 states have (on average 3.4661434082745775) internal successors, (26055), 7517 states have internal predecessors, (26055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:47:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 26055 transitions. [2022-01-18 06:47:54,349 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 26055 transitions. Word has length 30 [2022-01-18 06:47:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:47:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 7518 states and 26055 transitions. [2022-01-18 06:47:54,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 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) [2022-01-18 06:47:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 26055 transitions. [2022-01-18 06:47:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:47:54,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:47:54,361 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:47:54,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 06:47:54,561 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,SelfDestructingSolverStorable97 [2022-01-18 06:47:54,562 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:47:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:47:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash 505670412, now seen corresponding path program 50 times [2022-01-18 06:47:54,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:47:54,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938649211] [2022-01-18 06:47:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:47:54,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:47:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:47:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:54,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:47:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938649211] [2022-01-18 06:47:54,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938649211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:47:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518055042] [2022-01-18 06:47:54,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:47:54,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:47:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:47:54,878 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) [2022-01-18 06:47:54,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 06:47:54,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:47:54,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:47:54,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:47:54,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:47:55,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:55,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 44 [2022-01-18 06:47:55,230 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:55,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 61 [2022-01-18 06:47:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:55,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:47:55,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:55,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:55,910 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:55,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:47:55,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:55,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:55,930 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:47:55,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:47:56,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:56,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-01-18 06:47:56,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:47:56,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-01-18 06:47:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:47:56,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518055042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:47:56,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:47:56,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2022-01-18 06:47:56,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717191190] [2022-01-18 06:47:56,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:47:56,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:47:56,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:47:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:47:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:47:56,118 INFO L87 Difference]: Start difference. First operand 7518 states and 26055 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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) [2022-01-18 06:48:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:48:24,178 INFO L93 Difference]: Finished difference Result 16334 states and 53312 transitions. [2022-01-18 06:48:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2022-01-18 06:48:24,178 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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 30 [2022-01-18 06:48:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:48:24,216 INFO L225 Difference]: With dead ends: 16334 [2022-01-18 06:48:24,216 INFO L226 Difference]: Without dead ends: 16220 [2022-01-18 06:48:24,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44116 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=11557, Invalid=89249, Unknown=0, NotChecked=0, Total=100806 [2022-01-18 06:48:24,221 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 1104 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 8335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2683 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:48:24,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1456 Invalid, 8335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5135 Invalid, 0 Unknown, 2683 Unchecked, 3.1s Time] [2022-01-18 06:48:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16220 states. [2022-01-18 06:48:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16220 to 7505. [2022-01-18 06:48:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 7504 states have (on average 3.463219616204691) internal successors, (25988), 7504 states have internal predecessors, (25988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 25988 transitions. [2022-01-18 06:48:24,478 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 25988 transitions. Word has length 30 [2022-01-18 06:48:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:48:24,478 INFO L470 AbstractCegarLoop]: Abstraction has 7505 states and 25988 transitions. [2022-01-18 06:48:24,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 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) [2022-01-18 06:48:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 25988 transitions. [2022-01-18 06:48:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:48:24,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:48:24,491 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:48:24,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-18 06:48:24,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:24,692 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:48:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:48:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1362135974, now seen corresponding path program 51 times [2022-01-18 06:48:24,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:48:24,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640489163] [2022-01-18 06:48:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:48:24,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:48:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:48:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:24,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:48:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640489163] [2022-01-18 06:48:24,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640489163] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:48:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401446111] [2022-01-18 06:48:24,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:48:24,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:24,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:48:24,999 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) [2022-01-18 06:48:25,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 06:48:25,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:48:25,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:48:25,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:48:25,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:48:25,323 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:25,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2022-01-18 06:48:25,342 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:25,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 87 [2022-01-18 06:48:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:25,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:48:26,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:26,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 93 [2022-01-18 06:48:26,132 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:26,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-01-18 06:48:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:27,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401446111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:48:27,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:48:27,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-01-18 06:48:27,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702468385] [2022-01-18 06:48:27,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:48:27,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:48:27,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:48:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:48:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:48:27,219 INFO L87 Difference]: Start difference. First operand 7505 states and 25988 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:48:33,509 INFO L93 Difference]: Finished difference Result 16709 states and 56534 transitions. [2022-01-18 06:48:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 06:48:33,510 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:48:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:48:33,550 INFO L225 Difference]: With dead ends: 16709 [2022-01-18 06:48:33,550 INFO L226 Difference]: Without dead ends: 16630 [2022-01-18 06:48:33,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7115 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2654, Invalid=14902, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 06:48:33,551 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 622 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1159 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:48:33,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 404 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1642 Invalid, 0 Unknown, 1159 Unchecked, 1.0s Time] [2022-01-18 06:48:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16630 states. [2022-01-18 06:48:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16630 to 7559. [2022-01-18 06:48:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7558 states have (on average 3.463614712887007) internal successors, (26178), 7558 states have internal predecessors, (26178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 26178 transitions. [2022-01-18 06:48:33,775 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 26178 transitions. Word has length 30 [2022-01-18 06:48:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:48:33,775 INFO L470 AbstractCegarLoop]: Abstraction has 7559 states and 26178 transitions. [2022-01-18 06:48:33,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 26178 transitions. [2022-01-18 06:48:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:48:33,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:48:33,788 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 06:48:33,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 06:48:33,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:33,991 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:48:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:48:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1538721804, now seen corresponding path program 52 times [2022-01-18 06:48:33,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:48:33,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827668890] [2022-01-18 06:48:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:48:33,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:48:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:48:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:34,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:48:34,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827668890] [2022-01-18 06:48:34,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827668890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:48:34,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394026817] [2022-01-18 06:48:34,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:48:34,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:48:34,298 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) [2022-01-18 06:48:34,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 06:48:34,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:48:34,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:48:34,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:48:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:48:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:34,594 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:34,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2022-01-18 06:48:34,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:34,600 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:34,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 26 [2022-01-18 06:48:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:34,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:48:34,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:35,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 68 [2022-01-18 06:48:35,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,032 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:35,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 58 [2022-01-18 06:48:35,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,342 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:35,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 61 [2022-01-18 06:48:35,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:35,362 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:35,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 51 [2022-01-18 06:48:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394026817] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:48:35,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:48:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 31 [2022-01-18 06:48:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450490200] [2022-01-18 06:48:35,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:48:35,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:48:35,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:48:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:48:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:48:35,601 INFO L87 Difference]: Start difference. First operand 7559 states and 26178 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:48:41,576 INFO L93 Difference]: Finished difference Result 13585 states and 43889 transitions. [2022-01-18 06:48:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 06:48:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:48:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:48:41,607 INFO L225 Difference]: With dead ends: 13585 [2022-01-18 06:48:41,607 INFO L226 Difference]: Without dead ends: 13507 [2022-01-18 06:48:41,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5084 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2156, Invalid=11416, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 06:48:41,608 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 506 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:48:41,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 687 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2824 Invalid, 0 Unknown, 506 Unchecked, 1.5s Time] [2022-01-18 06:48:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13507 states. [2022-01-18 06:48:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13507 to 7582. [2022-01-18 06:48:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7582 states, 7581 states have (on average 3.4618124258013454) internal successors, (26244), 7581 states have internal predecessors, (26244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 26244 transitions. [2022-01-18 06:48:41,789 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 26244 transitions. Word has length 30 [2022-01-18 06:48:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:48:41,789 INFO L470 AbstractCegarLoop]: Abstraction has 7582 states and 26244 transitions. [2022-01-18 06:48:41,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 26244 transitions. [2022-01-18 06:48:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:48:41,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:48:41,801 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] [2022-01-18 06:48:41,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 06:48:42,002 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,SelfDestructingSolverStorable100 [2022-01-18 06:48:42,002 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:48:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:48:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 983099671, now seen corresponding path program 47 times [2022-01-18 06:48:42,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:48:42,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825059381] [2022-01-18 06:48:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:48:42,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:48:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:48:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:42,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:48:42,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825059381] [2022-01-18 06:48:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825059381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:48:42,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071506696] [2022-01-18 06:48:42,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:48:42,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:48:42,371 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) [2022-01-18 06:48:42,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 06:48:42,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:48:42,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:48:42,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:48:42,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:48:42,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:42,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:42,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:42,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-01-18 06:48:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:42,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:42,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:42,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 3 [2022-01-18 06:48:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:42,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:48:43,052 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:48:43,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:48:43,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,069 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:43,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:48:43,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:43,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:48:43,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:43,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:48:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:43,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071506696] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:48:43,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:48:43,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 06:48:43,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928297331] [2022-01-18 06:48:43,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:48:43,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:48:43,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:48:43,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:48:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:48:43,227 INFO L87 Difference]: Start difference. First operand 7582 states and 26244 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:48:51,327 INFO L93 Difference]: Finished difference Result 11688 states and 38988 transitions. [2022-01-18 06:48:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 06:48:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:48:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:48:51,353 INFO L225 Difference]: With dead ends: 11688 [2022-01-18 06:48:51,354 INFO L226 Difference]: Without dead ends: 11594 [2022-01-18 06:48:51,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8229 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2731, Invalid=19025, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 06:48:51,355 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 472 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:48:51,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 740 Invalid, 4231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 06:48:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11594 states. [2022-01-18 06:48:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11594 to 7602. [2022-01-18 06:48:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7602 states, 7601 states have (on average 3.4592816734640177) internal successors, (26294), 7601 states have internal predecessors, (26294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7602 states to 7602 states and 26294 transitions. [2022-01-18 06:48:51,556 INFO L78 Accepts]: Start accepts. Automaton has 7602 states and 26294 transitions. Word has length 30 [2022-01-18 06:48:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:48:51,556 INFO L470 AbstractCegarLoop]: Abstraction has 7602 states and 26294 transitions. [2022-01-18 06:48:51,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:48:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7602 states and 26294 transitions. [2022-01-18 06:48:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:48:51,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:48:51,568 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] [2022-01-18 06:48:51,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 06:48:51,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:51,769 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:48:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:48:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2041248553, now seen corresponding path program 48 times [2022-01-18 06:48:51,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:48:51,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855662725] [2022-01-18 06:48:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:48:51,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:48:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:48:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:52,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:48:52,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855662725] [2022-01-18 06:48:52,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855662725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:48:52,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627660334] [2022-01-18 06:48:52,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:48:52,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:48:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:48:52,149 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) [2022-01-18 06:48:52,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 06:48:52,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:48:52,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:48:52,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:48:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:48:52,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,481 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:52,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 66 [2022-01-18 06:48:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:52,496 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:52,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 117 [2022-01-18 06:48:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:52,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:48:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,964 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:52,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:48:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:52,978 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:48:52,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:48:53,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:53,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:53,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:53,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:48:53,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:53,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:48:53,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:48:53,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:48:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:48:53,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627660334] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:48:53,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:48:53,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2022-01-18 06:48:53,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249830435] [2022-01-18 06:48:53,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:48:53,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:48:53,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:48:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:48:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:48:53,109 INFO L87 Difference]: Start difference. First operand 7602 states and 26294 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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) [2022-01-18 06:49:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:49:01,823 INFO L93 Difference]: Finished difference Result 13282 states and 44055 transitions. [2022-01-18 06:49:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 06:49:01,823 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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 30 [2022-01-18 06:49:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:49:01,853 INFO L225 Difference]: With dead ends: 13282 [2022-01-18 06:49:01,853 INFO L226 Difference]: Without dead ends: 13167 [2022-01-18 06:49:01,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9094 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3232, Invalid=22850, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 06:49:01,854 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 773 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 4961 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 5692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:49:01,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1173 Invalid, 5692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4961 Invalid, 0 Unknown, 433 Unchecked, 2.4s Time] [2022-01-18 06:49:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13167 states. [2022-01-18 06:49:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13167 to 7713. [2022-01-18 06:49:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7712 states have (on average 3.454616182572614) internal successors, (26642), 7712 states have internal predecessors, (26642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 26642 transitions. [2022-01-18 06:49:02,040 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 26642 transitions. Word has length 30 [2022-01-18 06:49:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:49:02,040 INFO L470 AbstractCegarLoop]: Abstraction has 7713 states and 26642 transitions. [2022-01-18 06:49:02,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 34 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) [2022-01-18 06:49:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 26642 transitions. [2022-01-18 06:49:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:49:02,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:49:02,053 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] [2022-01-18 06:49:02,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 06:49:02,255 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,SelfDestructingSolverStorable102 [2022-01-18 06:49:02,255 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:49:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:49:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2118966875, now seen corresponding path program 49 times [2022-01-18 06:49:02,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:49:02,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831398493] [2022-01-18 06:49:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:49:02,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:49:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:49:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:02,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:49:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831398493] [2022-01-18 06:49:02,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831398493] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:49:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540110236] [2022-01-18 06:49:02,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:49:02,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:49:02,636 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) [2022-01-18 06:49:02,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 06:49:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:49:02,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:49:02,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:49:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:03,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-01-18 06:49:03,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:03,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2022-01-18 06:49:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:03,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:49:03,355 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:49:03,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 63 [2022-01-18 06:49:03,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:03,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 55 [2022-01-18 06:49:03,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:03,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:49:03,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:03,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:03,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:49:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:03,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540110236] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:49:03,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:49:03,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 06:49:03,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973438672] [2022-01-18 06:49:03,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:49:03,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:49:03,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:49:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:49:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:49:03,559 INFO L87 Difference]: Start difference. First operand 7713 states and 26642 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:49:15,762 INFO L93 Difference]: Finished difference Result 13854 states and 45807 transitions. [2022-01-18 06:49:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-01-18 06:49:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:49:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:49:15,793 INFO L225 Difference]: With dead ends: 13854 [2022-01-18 06:49:15,794 INFO L226 Difference]: Without dead ends: 13793 [2022-01-18 06:49:15,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15066 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4904, Invalid=32538, Unknown=0, NotChecked=0, Total=37442 [2022-01-18 06:49:15,796 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 621 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 5044 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 5567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 5044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:49:15,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 995 Invalid, 5567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 5044 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 06:49:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2022-01-18 06:49:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7731. [2022-01-18 06:49:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7731 states, 7730 states have (on average 3.457438551099612) internal successors, (26726), 7730 states have internal predecessors, (26726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 26726 transitions. [2022-01-18 06:49:15,980 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 26726 transitions. Word has length 30 [2022-01-18 06:49:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:49:15,981 INFO L470 AbstractCegarLoop]: Abstraction has 7731 states and 26726 transitions. [2022-01-18 06:49:15,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 26726 transitions. [2022-01-18 06:49:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:49:15,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:49:15,993 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] [2022-01-18 06:49:16,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 06:49:16,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 06:49:16,194 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:49:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:49:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1630446187, now seen corresponding path program 50 times [2022-01-18 06:49:16,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:49:16,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220183846] [2022-01-18 06:49:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:49:16,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:49:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:49:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:16,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:49:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220183846] [2022-01-18 06:49:16,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220183846] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:49:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053941465] [2022-01-18 06:49:16,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:49:16,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:49:16,534 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) [2022-01-18 06:49:16,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 06:49:16,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:49:16,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:49:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 06:49:16,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:49:16,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:16,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:16,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:16,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2022-01-18 06:49:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:16,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:16,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:16,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-01-18 06:49:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:17,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:49:17,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,379 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:17,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 56 [2022-01-18 06:49:17,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,393 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:17,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 44 [2022-01-18 06:49:17,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:17,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:49:17,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:17,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:17,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:49:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053941465] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:49:17,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:49:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2022-01-18 06:49:17,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855171533] [2022-01-18 06:49:17,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:49:17,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:49:17,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:49:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:49:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:49:17,521 INFO L87 Difference]: Start difference. First operand 7731 states and 26726 transitions. Second operand has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:49:23,847 INFO L93 Difference]: Finished difference Result 13366 states and 43961 transitions. [2022-01-18 06:49:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 06:49:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:49:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:49:23,877 INFO L225 Difference]: With dead ends: 13366 [2022-01-18 06:49:23,878 INFO L226 Difference]: Without dead ends: 13244 [2022-01-18 06:49:23,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4695 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1860, Invalid=12420, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 06:49:23,879 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 574 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 5227 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 5227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:49:23,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1541 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 5227 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 06:49:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13244 states. [2022-01-18 06:49:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13244 to 7951. [2022-01-18 06:49:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7951 states, 7950 states have (on average 3.4544654088050315) internal successors, (27463), 7950 states have internal predecessors, (27463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 27463 transitions. [2022-01-18 06:49:24,056 INFO L78 Accepts]: Start accepts. Automaton has 7951 states and 27463 transitions. Word has length 30 [2022-01-18 06:49:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:49:24,056 INFO L470 AbstractCegarLoop]: Abstraction has 7951 states and 27463 transitions. [2022-01-18 06:49:24,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7951 states and 27463 transitions. [2022-01-18 06:49:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:49:24,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:49:24,068 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] [2022-01-18 06:49:24,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 06:49:24,268 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,SelfDestructingSolverStorable104 [2022-01-18 06:49:24,269 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:49:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:49:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1913817913, now seen corresponding path program 51 times [2022-01-18 06:49:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:49:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387519342] [2022-01-18 06:49:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:49:24,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:49:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:49:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:24,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:49:24,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387519342] [2022-01-18 06:49:24,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387519342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:49:24,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983488420] [2022-01-18 06:49:24,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:49:24,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:49:24,575 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) [2022-01-18 06:49:24,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 06:49:24,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:49:24,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:49:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:49:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:49:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:24,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:24,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:24,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-01-18 06:49:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:24,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:24,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:24,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 3 [2022-01-18 06:49:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:49:25,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:25,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:49:25,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,281 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:25,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:49:25,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:25,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:49:25,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:25,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:49:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:25,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983488420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:49:25,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:49:25,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 35 [2022-01-18 06:49:25,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472456916] [2022-01-18 06:49:25,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:49:25,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:49:25,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:49:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:49:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1087, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:49:25,408 INFO L87 Difference]: Start difference. First operand 7951 states and 27463 transitions. Second operand has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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) [2022-01-18 06:49:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:49:30,578 INFO L93 Difference]: Finished difference Result 13277 states and 43824 transitions. [2022-01-18 06:49:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 06:49:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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 30 [2022-01-18 06:49:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:49:30,609 INFO L225 Difference]: With dead ends: 13277 [2022-01-18 06:49:30,609 INFO L226 Difference]: Without dead ends: 13198 [2022-01-18 06:49:30,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4441 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2136, Invalid=11436, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 06:49:30,610 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 631 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:49:30,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 956 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:49:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13198 states. [2022-01-18 06:49:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13198 to 7975. [2022-01-18 06:49:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7975 states, 7974 states have (on average 3.45322297466767) internal successors, (27536), 7974 states have internal predecessors, (27536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:49:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 27536 transitions. [2022-01-18 06:49:30,803 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 27536 transitions. Word has length 30 [2022-01-18 06:49:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:49:30,804 INFO L470 AbstractCegarLoop]: Abstraction has 7975 states and 27536 transitions. [2022-01-18 06:49:30,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 35 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) [2022-01-18 06:49:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 27536 transitions. [2022-01-18 06:49:30,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:49:30,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:49:30,816 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] [2022-01-18 06:49:30,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 06:49:31,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:31,017 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:49:31,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:49:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash -140710077, now seen corresponding path program 52 times [2022-01-18 06:49:31,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:49:31,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471811253] [2022-01-18 06:49:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:49:31,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:49:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:49:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:31,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:49:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471811253] [2022-01-18 06:49:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471811253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:49:31,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567582678] [2022-01-18 06:49:31,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:49:31,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:31,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:49:31,379 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) [2022-01-18 06:49:31,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 06:49:31,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:49:31,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:49:31,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:49:31,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:49:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:31,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:31,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 62 [2022-01-18 06:49:31,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:31,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:31,736 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:31,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 77 [2022-01-18 06:49:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:31,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:49:32,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,153 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:32,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 57 [2022-01-18 06:49:32,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:49:32,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 45 [2022-01-18 06:49:32,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:32,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-01-18 06:49:32,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:49:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:49:32,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2022-01-18 06:49:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:49:32,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567582678] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:49:32,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:49:32,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 35 [2022-01-18 06:49:32,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398970760] [2022-01-18 06:49:32,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:49:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:49:32,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:49:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:49:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:49:32,291 INFO L87 Difference]: Start difference. First operand 7975 states and 27536 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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) Received shutdown request... [2022-01-18 06:49:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 06:49:33,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=523, Invalid=2783, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 06:49:33,523 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 302 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:49:33,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 171 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 06:49:33,524 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 06:49:33,535 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 06:49:33,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 06:49:33,554 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 [2022-01-18 06:49:33,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:49:33,731 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (7975states) and FLOYD_HOARE automaton (currently 26 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. [2022-01-18 06:49:33,733 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 06:49:33,733 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 06:49:33,733 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 06:49:33,736 INFO L732 BasicCegarLoop]: Path program histogram: [52, 52, 1, 1, 1] [2022-01-18 06:49:33,738 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 06:49:33,738 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 06:49:33,739 INFO L202 PluginConnector]: Adding new model array-sum.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 06:49:33 BasicIcfg [2022-01-18 06:49:33,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 06:49:33,740 INFO L158 Benchmark]: Toolchain (without parser) took 730714.20ms. Allocated memory was 392.2MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 350.5MB in the beginning and 628.7MB in the end (delta: -278.2MB). Peak memory consumption was 454.2MB. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 392.2MB. Free memory is still 351.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.69ms. Allocated memory is still 392.2MB. Free memory was 350.5MB in the beginning and 348.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 INFO L158 Benchmark]: Boogie Preprocessor took 12.99ms. Allocated memory is still 392.2MB. Free memory was 348.9MB in the beginning and 347.9MB in the end (delta: 933.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 INFO L158 Benchmark]: RCFGBuilder took 172.67ms. Allocated memory is still 392.2MB. Free memory was 347.8MB in the beginning and 339.0MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 INFO L158 Benchmark]: TraceAbstraction took 730486.23ms. Allocated memory was 392.2MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 338.5MB in the beginning and 628.7MB in the end (delta: -290.2MB). Peak memory consumption was 441.6MB. Max. memory is 16.0GB. [2022-01-18 06:49:33,740 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 0.10ms. Allocated memory is still 392.2MB. Free memory is still 351.6MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.69ms. Allocated memory is still 392.2MB. Free memory was 350.5MB in the beginning and 348.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.99ms. Allocated memory is still 392.2MB. Free memory was 348.9MB in the beginning and 347.9MB in the end (delta: 933.6kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 172.67ms. Allocated memory is still 392.2MB. Free memory was 347.8MB in the beginning and 339.0MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 730486.23ms. Allocated memory was 392.2MB in the beginning and 1.1GB in the end (delta: 731.9MB). Free memory was 338.5MB in the beginning and 628.7MB in the end (delta: -290.2MB). Peak memory consumption was 441.6MB. Max. memory is 16.0GB. * 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: 60]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (7975states) and FLOYD_HOARE automaton (currently 26 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 53]: 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 (7975states) and FLOYD_HOARE automaton (currently 26 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 54]: 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 (7975states) and FLOYD_HOARE automaton (currently 26 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - TimeoutResultAtElement [Line: 53]: 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 (7975states) and FLOYD_HOARE automaton (currently 26 states, 36 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 58 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 730.4s, OverallIterations: 107, TraceHistogramMax: 2, PathProgramHistogramMax: 52, EmptinessCheckTime: 0.8s, AutomataDifference: 571.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57204 SdHoareTripleChecker+Valid, 119.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57204 mSDsluCounter, 54022 SdHoareTripleChecker+Invalid, 102.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 31772 IncrementalHoareTripleChecker+Unchecked, 95055 mSDsCounter, 21531 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226020 IncrementalHoareTripleChecker+Invalid, 279323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21531 mSolverCounterUnsat, 3633 mSDtfsCounter, 226020 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15415 GetRequests, 4447 SyntacticMatches, 404 SemanticMatches, 10563 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688327 ImplicationChecksByTransitivity, 476.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7975occurred in iteration=106, InterpolantAutomatonStates: 8812, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.0s AutomataMinimizationTime, 106 MinimizatonAttempts, 467381 StatesRemovedByMinimization, 106 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 121.2s InterpolantComputationTime, 6048 NumberOfCodeBlocks, 6033 NumberOfCodeBlocksAsserted, 330 NumberOfCheckSat, 8727 ConstructedInterpolants, 228 QuantifiedInterpolants, 172621 SizeOfPredicates, 1442 NumberOfNonLiveVariables, 6624 ConjunctsInSsa, 2067 ConjunctsInUnsatCore, 315 InterpolantComputations, 3 PerfectInterpolantSequences, 216/2150 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